Monday, December 08, 2025

Dwarf Galaxy Markarian 178: Where massive stars make their mark | Hubble

Dwarf Galaxy Markarian 178: Where massive stars make their mark | Hubble


The glittering blue galaxy in this Hubble Space Telescope picture is a blue compact dwarf galaxy called Markarian 178 (Mrk 178). This galaxy, substantially smaller than our own Milky Way, lies 13 million light-years away in the constellation Ursa Major (The Great Bear). Mrk 178 is one of more than 1,500 Markarian galaxies. These galaxies get their name from the Armenian astrophysicist Benjamin Markarian. He compiled a list of galaxies that were surprisingly bright in ultraviolet light.

While the bulk of the galaxy is blue owing to an abundance of young, hot stars with little dust shrouding them, Mrk 178 gets a red hue from a collection of massive stars that are especially concentrated in the brightest, reddish region near the galaxy’s edge. This azure cloud is home to a large number of rare objects called Wolf–Rayet stars. Wolf–Rayet stars are massive stars that are casting off their atmospheres through powerful winds. Because Mrk 178 contains so many Wolf–Rayet stars, the bright emission lines from these stars’ hot stellar winds are etched upon the galaxy’s spectrum. Particularly ionized hydrogen and oxygen appear as a red color to Mrk 178 in this photo, observed using Hubble’s specialized light filters.

Massive stars enter the Wolf–Rayet phase just before they collapse into black holes or neutron stars. Because Wolf–Rayet stars last for only a few million years, researchers know that something must have triggered a recent burst of star formation in Mrk 178. At first glance, it is not clear what could be the cause—Mrk 178 does not seem to have any close galactic neighbors that could have stirred up its gas to form new stars. Instead, researchers suspect that a gas cloud crashed into Mrk 178, or its gas may have been disturbed as the galaxy swims through the intergalactic medium, lighting up this tiny galaxy with a ripple of bright new stars.

Image Description: A pale blue dwarf galaxy seen on the black backdrop of space with faraway galaxies. The galaxy itself resembles a fuzzy cloud of tightly-packed stars with a broad halo of stars dispersed around it. Several small, glowing patches of gas are spread across the galaxy’s core, where very hot stars are concentrated.


Credit: ESA/Hubble & NASA, F. Annibali, S. Hong
Release Date: Dec. 8, 2025


#NASA #ESA #Astronomy #Space #Science #Hubble #Stars #WolfRayetStars #Galaxies #Markarian178 #Mrk178 #DwarfGalaxies #UrsaMajor #Constellations #Cosmos #Universe #HubbleSpaceTelescope #HST #GSFC #STScI #UnitedStates #Europe #STEM #Education

Sunday, December 07, 2025

The Bipolar Jets of Young Variable Star KX Andromedae

The Bipolar Jets of Young Variable Star KX Andromedae

Blasting outward from variable star KX Andromedae, these huge bipolar jets are 19 light-years long. Recently discovered, they are revealed in unprecedented detail in this deep telescopic image centered on KX And and composed from over 692 hours of combined image data. In fact, KX And is spectroscopically found to be an interacting binary star system consisting of a bright, hot B-type star with a swollen cool giant star as its co-orbiting, close companion. The stellar material from the cool giant star is likely being transferred to the hot B-type star through an accretion disk with symmetric jets driven outward perpendicular to the disk itself. The known distance to KX And of 2,500 light-years, angular size of the jets, and estimated inclination of the accretion disk led to the size estimate for each jet to be 19 light-years.


Image Credit & Copyright: Tim Schaeffer and the Deep Sky Collective
Tim Schaeffer's website: 
Deep Sky Collective website: 
https://deepskycollective.com/gallery
Release Date: Dec. 5, 2025

#NASA #Space #Astronomy #Science #Stars #VariableStars #KXAndromedae #KXAnd #BinaryStarSystems #BipolarJets #Andromeda #Constellations #MilkyWayGalaxy #Cosmos #Universe #Astrophotography #TimSchaeffer #DeepSkyCollective #Astrophotographers #GSFC #UnitedStates #STEM #Education #APoD

Playing "Peekaboo" with The Moon | International Space Station

Playing "Peekaboo" with The Moon | International Space Station

Expedition 73 flight engineer and Japan Aerospace Exploration Agency (JAXA) astronaut Kimiya Yui shared this short video clip of the Moon on December 6, 2025.

The Artemis II Space Launch System (SLS) rocket and the Orion spacecraft will carry NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and Canadian Space Agency (CSA) astronaut Jeremy Hansen on a 10-day mission around the Moon and back in early 2026 from Launch Complex 39B at NASA's Kennedy Space Center.

The term "peekaboo" refers to a children's game where one player hides their face and pops back into view, exclaiming "Peekaboo!" This game is believed to have originated in the 1590s and is used to amuse infants by engaging them in a playful interaction. The game is thought to help infants develop cognitive skills, such as object permanence, by encouraging them to expect and surprise the other player when they reappear. The word "peekaboo" is derived from the combination of the verbs "peek" and "boo," reflecting the action of hiding and revealing the face.

Follow Expedition 73:

Expedition 73 Crew
Station Commander: Sergey Ryzhikov (Roscosmos)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov, Sergey-Kud Sverchkov, Sergei Mikaev
NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Learn more about the important research being operated on Station:
https://www.nasa.gov/iss-science

For more information about STEM on Station:
https://www.nasa.gov/stemonstation
Science, Technology, Engineering, Math (STEM)

Video Credit: Kimiya Yui/JAXA
Duration: 26 seconds
Release Date: Dec. 6, 2025


#NASA #Space #ISS #Science #Planets #Earth #Moon #Peekaboo #Astronauts #KimiyaYui #AstronautVideography #JAXA #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #SpaceLaboratory #InternationalCooperation #Expedition73 #UnitedStates #STEM #Education #HD #Video

Stratovolcano Mount Fuji in Japan | International Space Station

Stratovolcano Mount Fuji in Japan | International Space Station

Expedition 73 flight engineer and Japan Aerospace Exploration Agency (JAXA) astronaut Kimiya Yui shared this photo of his home country on December 7, 2025.
Mount Fuji is an active stratovolcano located on the Japanese island of Honshu with a summit elevation of 3,776.24 m (12,389 ft 3 in). It is the tallest mountain in Japan, the second-highest volcano located on an island in Asia and seventh-highest peak of an island on Earth. The mountain is located about 100 km (62 mi) southwest of Tokyo and is visible from the Japanese capital on clear days. Mount Fuji's exceptionally symmetrical cone, usually covered in snow for about five months of the year, is commonly used as a cultural icon of Japan and is frequently depicted in art and photography, as well as visited by sightseers, hikers and mountain climbers. Mount Fuji last erupted between 1707 and 1708.

Follow Expedition 73:

Expedition 73 Crew
Station Commander: Sergey Ryzhikov (Roscosmos)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov, Sergey-Kud Sverchkov, Sergei Mikaev
NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Learn more about the important research being operated on Station:
https://www.nasa.gov/iss-science

For more information about STEM on Station:
https://www.nasa.gov/stemonstation
Science, Technology, Engineering, Math (STEM)

Image Credit: Kimiya Yui/JAXA
Release Date: Dec. 7, 2025


#NASA #Space #ISS #Science #Planets #Earth #MountFuji #富士山 #Honshu #本州 #Japan #日本 #EastAsia #Asia #EarthObservation #KimiyaYui #AstronautPhotography #JAXA #Astronauts #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #SpaceLaboratory #InternationalCooperation #Expedition73 #UnitedStates #STEM #Education

Expedition 74 Crew Portrait | International Space Station

Expedition 74 Crew Portrait | International Space Station

The official portrait of the Expedition 74 crew on the International Space Station. Top row from left, Commander Mike Fincke and Flight Engineer Zena Cardman, both NASA astronauts, the Japan Aerospace Exploration Agency (JAXA) Flight Engineer Kimiya Yui, and Roscosmos Flight Engineer Oleg Platonov (Russia). Bottom row, Roscosmos Flight Engineer Sergey Kud-Sverchkov  (Russia), NASA astronaut Chris Williams, and Roscosmos Flight Engineer Sergei Mikaev (Russia).

Expedition 73 symbolically changed commanders this weekend before three crew members return to Earth on Monday, Dec. 8, 2025. Expedition 74 officially begins once the home bound trio undocks from the Rassvet module inside the Soyuz MS-27 spacecraft the following day. Veteran Roscosmos cosmonaut and station Commander Sergey Ryzhikov of Russia handed over a symbolic key representing command of the orbital outpost to four-time space flyer NASA astronaut Mike Fincke at 10:30 a.m. EDT on Sunday, Dec. 7. Fincke will formally take responsibility of station operations  and lead the new Expedition 74 crew at the moment Ryzhikov and Flight Engineers Alexey Zubritsky of Roscosmos (Russia) and Jonny Kim of NASA back away from the orbital outpost inside their Soyuz crew spacecraft at 8:41 p.m. on Monday.

The trio aboard the Soyuz descent module will parachute to a landing in Kazakhstan less than three-and-a-half hours later at 12:04 a.m. on Tuesday completing an eight-month space research journey orbiting over 250 miles above Earth.

Follow Expedition 73:

Expedition 73 Crew
Station Commander: Sergey Ryzhikov (Roscosmos)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov, Sergey-Kud Sverchkov, Sergei Mikaev
NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Image Credit: NASA's Johnson Space Center 
Release Date: Dec. 6, 2025

#NASA #Space #ISS #Earth #Astronauts #Cosmonauts #HumanSpaceflight #SpaceLaboratory #JSC #UnitedStates #Russia #Roscosmos #Japan #JAXA #Expedition73 #Expedition74 #InternationalCooperation #STEM #Education

Interstellar Comet 3I ATLAS | Hubble Space Telescope

Interstellar Comet 3I ATLAS | Hubble Space Telescope

The NASA/European Space Agency Hubble Space Telescope reobserved interstellar comet 3I/ATLAS on November 30, 2025, with its Wide Field Camera 3 instrument. At the time, the comet was about 286 million kilometers from Earth. Hubble tracked the comet as it moved across the sky. As a result, background stars appear as streaks of light.

Hubble previously observed 3I/ATLAS in July, shortly after its discovery, and a number of observatories have since studied the comet as well. Observations are expected to continue for several more months as 3I/ATLAS heads out of the solar system.

Learn more about Interstellar Comet 3I/ATLAS:
https://science.nasa.gov/solar-system/comets/3i-atlas/


Credit: NASA, ESA, STScI, D. Jewitt (UCLA). Image Processing: J. DePasquale (STScI)
Image Date: Nov. 30, 2025
Release Date: Dec. 4, 2025

#NASA #Astronomy #Hubble #Space #Science #InterstellarObjects #InterplanetaryBodies #InterstellarComets #InterstellarComet3I #Comet3I #SolarSystem #Planets #Cosmos #Universe #HubbleSpaceTelescope #HST #GSFC #STScI #UnitedStates #ESA #Europe #STEM #Education

Saturday, December 06, 2025

China Landspace Zhuque-3 Y1 Reusable Rocket Test Launch Recap

China Landspace Zhuque-3 Y1 Reusable Rocket Test Launch Recap


China Landspace update: "The Zhuque-3 launch vehicle completed its maiden flight with all primary mission events performed nominally. The first stage flight was normal, stage separation performed as planned, and the fairing jettison and first stage landed precisely within the designated area. The second stage performed normally and achieved the target orbit, marking a complete success of the orbital launch mission."
"During the first stage recovery system verification test, engines thrust throttling operated normally, attitude control remained stable, and the down range recovery trajectory was nominal. An anomaly occurred as the first stage approached the designated recovery zone. No personnel safety issues occurred. China’s first rocket recovery attempt achieved its expected technical objectives."

On December 3, 2025, 12:00 p.m. (UTC+8), China commercial launch services firm Landspace's Zhuque-3 (ZQ-3) Y1 launch vehicle lifted off from the Dongfeng Commercial Space Innovation Pilot Zone in northwestern China near the Jiuquan spaceport, completing its flight mission with a successful preset orbital insertion by its second stage. However, anomalous combustion occurred, preventing the first stage from achieving a soft landing at the recovery site. The first stage was not recovered. Despite this, the mission validated the design and operational procedures of the Zhuque-3 rocket, including testing, launch, and flight processes. Moreover, it confirmed the compatibility of interfaces across all systems and provided critical flight engineering data.

By comparison, SpaceX's first landing test occurred in September 2013 on the sixth flight of a Falcon 9 and maiden launch of the v1.1 rocket version. Between 2013 to 2016, sixteen test flights were conducted, only six of these achieved a soft landing and recovery of the first-stage booster. 

SpaceX CEO Elon Musk has commented on the Landspace Zhuque-3's design: "They have added aspects of Starship, such as use of stainless steel and methalox, to a Falcon 9 architecture, which would enable it to beat Falcon 9 . . ."

With a diameter of 4.5 meters and a total length of around 66 meters, the Zhuque-3 rocket can carry up to 18 satellites per launch, making it an ideal choice for launching satellites for large-scale constellation networks.

Equipped with landing legs and grid fins for controlled descent, the rocket is designed to vertically recover its most expensive component—the first stage, accounting for 70 percent of the rocket's total cost.

As its first stage is designed to be reused at least 20 times, the rocket has the potential to reduce launch costs by 80 to 90 percent compared with single-use rockets.

Powered by a parallel cluster of nine liquid oxygen-methane engines, the first-stage can achieve meter-level landing precision, as five of the engines are capable of gimballing.

In addition, these engines produce a combined thrust of more than 7,500 kilonewtons, setting a new record for Chinese commercial liquid-fueled rockets.

Beijing-based LandSpace is a leading Chinese private space company. With its Zhuque-2 rocket, LandSpace became the world's first company to launch a methane-liquid oxygen rocket to Earth orbit in July 2023, ahead of U.S. rivals, including Elon Musk's SpaceX and Jeff Bezos' Blue Origin.

Zhuque-3's development marks a significant stride in the pursuit of low-cost, high-frequency, and large-capacity space launches for China's private space industry.

The Jiuquan Satellite Launch Center (JSLC) in nortwestern China was founded in 1958. It was the first of China's four spaceports. The launch center has been the focus of many of China's historic space ventures, including the country's first satellite Dong Fang Hong I in 1970 and their first crewed space mission, Shenzhou V, on October 15, 2003. JSLC is now a home for many new Chinese commercial space launch firms, like Landspace.


Credit: Landspace
Time: 3 minutes, 29 seconds
Date: Dec. 3, 2025


#NASA #Space #Satellites #Earth #LEO #China #中国 #LandSpace #蓝箭 #Zhuque3Rocket #Zhuque3 #ReusableRockets #LaunchVehicles #MethaneLiquidOxygen #Methalox #JSLC  #JiuquanSatelliteLaunchCenter #酒泉卫星发射中心 #InnerMongolia #CommercialSpace #CommercialSpaceflight #STEM #Education #HD #Video

NASA Near-Earth Object Surveyor’s Large Sunshade Takes Shape | JPL

NASA Near-Earth Object Surveyor’s Large Sunshade Takes Shape  | JPL

The sunshade for NASA’s Near-Earth Object (NEO) Surveyor mission towers above a fixture at supplier Applied Aerospace in Stockton, California, in September 2025. Standing at over 20 feet (6 meters) high, the sunshade is the largest component of spacecraft. The structure was next shipped to BAE Systems in Boulder, Colorado, for a “fit check” with the spacecraft bus. For scale, technicians and engineers from the project in front of the sunshade.

The sunshade’s Sun-facing surface (visible here) will next be fitted with solar panels that will generate power for the spacecraft after launch. The spacecraft’s instrument enclosure, housing the telescope and sensitive infrared cameras, will be located behind the sunshade, allowing the spacecraft to detect and track near-Earth objects that would otherwise be hidden by the Sun’s glare.
The sunshade for NASA’s Near-Earth Object (NEO) Surveyor mission towers above a fixture at supplier Applied Aerospace in Stockton, California, in September 2025. Standing at over 20 feet (6 meters) high, the sunshade is the largest component of spacecraft. The structure was next shipped to BAE Systems in Boulder, Colorado, for a “fit check” with the spacecraft bus.

NASA/JPL Planetary Defense Coordination Office (PDCO) emblem

The infrared Near-Earth Object Surveyor space telescope (NEO Surveyor) is designed to help advance NASA’s planetary defense efforts to discover and characterize most of the potentially hazardous asteroids and comets that come within 30 million miles of Earth’s orbit. These are collectively known as near-earth objects, or NEOs.

NEO Surveyor will launch no earlier than September 2027.

NEO Surveyor consists of a single scientific instrument: a 50 centimeter (nearly 20 inch) diameter telescope that operates in two heat-sensing infrared wavelengths. It will be capable of detecting bright and dark asteroids—the most difficult type to find.

After launch, NEO Surveyor will carry out a five-year baseline survey to find at least two-thirds of the near-Earth objects larger than 140 meters (460 feet). These are the objects large enough to cause major regional damage in the event of an Earth impact. By using two heat-sensitive infrared imaging channels, NEO Surveyor can make accurate measurements of NEO sizes and gain valuable information about their composition, shapes, rotational states, and orbits.

NEO Surveyor employs an innovative observation strategy to independently discover new asteroids and comets and determine their orbits with enough accuracy to allow them to be found again. In five years of survey operation, NEO Surveyor is designed to make significant progress toward meeting the United States Congress' mandate to NASA to find more than 90 percent of all NEOs larger than 140 meters in diameter.

NASA's NEO Surveyor will build upon the successes of NEOWISE as the first space mission built specifically to find large numbers of hazardous asteroids and comets. The space telescope will launch to a region of gravitational stability between the Earth and the Sun called the L1 Lagrange point, where the spacecraft will orbit during its five-year primary mission. From this location, the space telescope will view the solar system in infrared wavelengths and light that is invisible to the human eye. Because those wavelengths are mostly blocked by Earth's atmosphere, larger ground-based observatories may miss near-Earth objects that NEO Surveyor will be able to spot from space by using its modest light-collecting aperture of nearly 20 inches (50 centimeters).

NEO Surveyor's advanced detectors are designed to observe two heat-sensitive infrared bands that were chosen specifically so the spacecraft can track the most challenging-to-find near-Earth objects, such as dark asteroids and comets that do not reflect much visible light. In the infrared wavelengths that NEO Surveyor is sensitive to, these objects glow as they are heated by sunlight. In addition, NEO Surveyor will be able to find asteroids that approach Earth from the direction of the Sun, as well as those that lead and trail our planet's orbit, where they are typically obscured by the glare of sunlight—objects known as Earth Trojans.

The mission is tasked by NASA's Planetary Science Division within the Science Mission Directorate; program oversight is provided by the Planetary Defense Coordination Office (PDCO), established in 2016 to manage the agency's ongoing efforts in planetary defense. NASA's Planetary Missions Program Office at Marshall Space Flight Center provides program management for NEO Surveyor.

The project is being developed by the Jet Propulsion Laboratory (JPL) and is led by survey director Amy Mainzer at the University of Arizona. Established aerospace and engineering companies have been contracted to build the spacecraft and its instrumentation, including Ball Aerospace, Space Dynamics Laboratory, and Teledyne. The Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder will support operations, and IPAC-Caltech in Pasadena, California, is responsible for processing survey data and producing the mission's data products. Caltech manages JPL for NASA.

JPL Center for NEO Studies (CNEOS): https://cneos.jpl.nasa.gov/

Planetary Defense at NASA: 
https://www.nasa.gov/planetarydefense


Image Credit: NASA/Jet Propulsion Laboratory (JPL)
Image Date: Dec. 5, 2025


#NASA #Astronomy #Space #Science #Earth #Planet #PlanetaryDefense #Asteroids #EarthTrojans #AsteroidBelt #Comets #NEO #NEA #SolarSystem #SpaceTechnology #NEOSurveyorMission #WISE #NEOWISE #InfraredAstronomy #InfraredTelescopes #JPL #Caltech #Houston #Texas #JSC #MSFC #UnitedStates #STEM #Education

Artemis II Moon Rocket Boosters with America's 250 Anniversary Emblem | NASA

Artemis II Moon Rocket Boosters with America's 250 Anniversary Emblem | NASA




Technicians with NASA’s Exploration Ground Systems (EGS) Program complete installation of the America 250 emblem on the twin Space Launch System (SLS) solid rocket boosters for the Artemis II mission inside the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on Thursday, Dec. 4, 2025. 

The SLS rocket and the Orion spacecraft will carry NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and Canadian Space Agency (CSA) astronaut Jeremy Hansen on a 10-day mission around the Moon and back in early 2026 from Launch Complex 39B at NASA Kennedy. America 250 commemorates the 250th anniversary of the signing of the Declaration of Independence (1776-2025) with NASA celebrating the “Spirit of Innovation” theme to inspire future generations.

Ahead of rolling out the integrated SLS rocket to the launch pad, teams will be conducting a series of verification tests. 

Check the NASA Artemis II Mission page for updates:

Learn more about NASA's Space Launch System (SLS) rocket: nasa.gov/sls

Follow updates on the Artemis blog: 

Image Credit: NASA/Frank Michaux
Image Date: Dec. 4, 2025

#NASA #Space #Science #Earth #Moon #Artemis #ArtemisII #America250 #OrionSpacecraft #SLS #SLSRocket #CrewedMissions #DeepSpace #MoonToMars #Engineering #SpaceTechnology #HumanSpaceflight #SolarSystem #SpaceExploration #NASAKennedy #KSC #VAB #Florida #UnitedStates #STEM #Education

Planet Mercury's Comet-like Tail (sodium spectrum-view)

Planet Mercury's Comet-like Tail (sodium spectrum-view)



Astrophotographer Steven Bellavia: "A 24 million km long plume of gas is ejected from Mercury's thin atmosphere due to the sun, very much like a comet. This is only visible using a narrowband filter that captures the bright yellow sodium light at 589nm. A tail was predicted in the 1980s, and first discovered in 2001. Multiple observations by NASA's robotic MESSENGER spacecraft that orbited Mercury between 2011 and 2015 revealed more details of this tail."

Mercury is the first planet from the Sun and the smallest in the Solar System. It is a rocky planet with a trace atmosphere and a surface gravity slightly higher than that of Mars. The surface of Mercury is similar to Earth's Moon, being heavily cratered, with an expansive rupes system generated from thrust faults, and bright ray systems, formed by ejecta.

Learn more about investigations of Mercury's tail by NASA's MESSENGER spacecraft:
https://science.nasa.gov/photojournal/exploring-mercurys-tail/

Image Credit 1: Steven Bellavia
Image Credit 2: Canadian Space Agency (CSA)
Steven's website: https://www.astrobin.com/users/bellavia/collections/
Location: Surry, Virginia
Image Date: Dec. 3, 2025

#NASA #Astronomy #Space #Science #SolarSystem #Sun #Planets #Mercury #PlanetaryAtmospheres #AtmosphericOutgassing #MilkyWayGalaxy #Cosmos #Universe #Astrophotography #StevenBellavia #Astrophotographers #CitizenScience #STEM #Education

Holiday Wishes from NASA Astronaut Jonny Kim | International Space Station

Holiday Wishes from NASA Astronaut Jonny Kim | International Space Station

Expedition 73 Flight Engineer and NASA Astronaut Jonny Kim: "It's not where you spend the holidays, but who you spend the holidays with. While we miss our families on Earth dearly, our family is also with us in space. Happy holidays and love from Expedition 73."

UpdateNASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky of Russia are poised to complete a 245-day space research mission when they undock at 8:41 p.m. EDT on Monday, Dec. 8, 2025, from the Prichal module inside the Soyuz MS-27 crew spacecraft. The trio will parachute back to Earth inside the Soyuz descent module for a landing in Kazakhstan at 12:04 a.m. on Tuesday, less than three-and-a-half hours later. 

NASA Astronaut Jonny Kim's Biography:

Follow Expedition 73:

Expedition 73 Crew
Station Commander: Sergey Ryzhikov (Roscosmos)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov, Sergey-Kud Sverchkov, Sergei Mikaev
NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Video Credit: NASA's Johnson Space Center
Duration: 6 minutes
Release Date: Dec. 5, 2025

#NASA #Space #ISS #Earth #Astronauts #JonnyKim #Cosmonauts #HumanSpaceflight #MicrogravityResearch #SpaceLaboratory #JSC #UnitedStates #Russia #Roscosmos #Japan #JAXA #Expedition73 #STEM #Education #HD #Video

Orbital sunrise illuminates Earth's atmosphere & clouds | International Space Station

Orbital sunrise illuminates Earth's atmosphere & clouds | International Space Station

An orbital sunrise illuminates Earth's atmosphere and cloud tops in this photograph captured from the International Space Station as it orbited 264 miles above the Czech Republic in Eastern Europe.

Update: NASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky of Russia are poised to complete a 245-day space research mission when they undock at 8:41 p.m. EDT on Monday, Dec. 8, 2025, from the Prichal module inside the Soyuz MS-27 crew spacecraft. The trio will parachute back to Earth inside the Soyuz descent module for a landing in Kazakhstan at 12:04 a.m. on Tuesday, less than three-and-a-half hours later. 

Follow Expedition 73:

Expedition 73 Crew
Station Commander: Sergey Ryzhikov (Roscosmos)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov, Sergey-Kud Sverchkov, Sergei Mikaev
NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Image Credit: NASA's Johnson Space Center 
Image Date: Oct. 30, 2025
Release Date: Dec. 3, 2025

#NASA #Space #ISS #Earth #OrbitalSunrise #Astronauts #Cosmonauts #HumanSpaceflight #MicrogravityResearch #SpaceLaboratory #JSC #UnitedStates #Russia #Roscosmos #Japan #JAXA #Expedition73 #STEM #Education

U.S. Cygnus XL cargo ship moved for Russian Soyuz | International Space Station

U.S. Cygnus XL cargo ship moved for Russian Soyuz | International Space Station

Northrop Grumman's Cygnus XL cargo craft is pictured in the grips of the International Space Station Canadarm2 robotic arm. Cygnus XL had been temporarily released from its Earth-facing port on the Unity module to make room for the Russian Soyuz MS-28 crew spacecraft that was scheduled to arrive the next day and dock to the Rassvet module. The Japan Aerospace Exploration Agency (JAXAHTV-X1 cargo craft, with its solar arrays deployed, is seen berthed to the Earth-facing port of the Harmony module. The orbital outpost was soaring 263 miles above the Pacific Ocean southwest of Galapagos Islands at the time of this photograph.
This close-up view from a window on the International Space Station's cupola shows Northrop Grumman's Cygnus XL cargo craft in the grips of the Canadarm2 robotic arm. Cygnus XL had been temporarily released from its Earth-facing port on the Unity module to make room for the Russian Soyuz MS-28 crew spacecraft, which was scheduled to arrive the next day and dock to the Rassvet module. A solar array belonging to the Japan Aerospace Exploration Agency (JAXA) HTV-X1 cargo craft extends across the frame.
Northrop Grumman's Cygnus XL cargo craft is pictured in the grips of the International Space Station Canadarm2 robotic arm. Cygnus XL had been temporarily released from its Earth-facing port on the Unity module to make room for the Russian Soyuz MS-28 crew spacecraft, which was scheduled to arrive the next day and dock to the Rassvet module. The Japan Aerospace Exploration Agency (JAXAHTV-X1 cargo craft, with its solar arrays deployed, is seen berthed to the Earth-facing port of the Harmony module. The orbital outpost was soaring 263 miles above the Pacific Ocean southwest of Galapagos Islands at the time of this photograph.
Northrop Grumman's Cygnus XL cargo craft is pictured in the grips of the International Space Station Canadarm2 robotic arm. Cygnus XL had been temporarily released from its Earth-facing port on the Unity module to make room for the Russian Soyuz MS-28 crew spacecraft, which was scheduled to arrive the next day and dock to the Rassvet module. The Japan Aerospace Exploration Agency (JAXAHTV-X1 cargo craft, with its solar arrays deployed, is seen berthed to the Earth-facing port of the Harmony module. The orbital outpost was soaring 261 miles above the Caribbean Sea south of Cuba at the time of this photograph.

Northrop Grumman's Cygnus XL cargo craft is pictured in the grips of the International Space Station Canadarm2 robotic arm. Cygnus XL had been temporarily released from its Earth-facing port on the Unity module to make room for the Russian Soyuz MS-28 crew spacecraft, which was scheduled to arrive the next day and dock to the Rassvet module. The Japan Aerospace Exploration Agency (JAXA) HTV-X1 cargo craft, with its solar arrays deployed, is seen berthed to the Earth-facing port of the Harmony module. The orbital outpost was soaring 262 miles above the Caribbean Sea east of the Yucatan Peninsula.
Northrop Grumman's Cygnus XL cargo craft is pictured in the grips of the International Space Station Canadarm2 robotic arm. Cygnus XL had been temporarily released from its Earth-facing port on the Unity module to make room for the Russian Soyuz MS-28 crew spacecraft, which was scheduled to arrive the next day and dock to the Rassvet module. The Japan Aerospace Exploration Agency (JAXA) HTV-X1 cargo craft, with its solar arrays deployed, is seen berthed to the Earth-facing port of the Harmony module. The orbital outpost was soaring 262 miles above the Caribbean Sea south of Cuba at the time of this photograph.

The United States Northrop Grumman Cygnus XL cargo spacecraft is pictured in the grips of the International Space Station's Canadarm2 robotic arm. Cygnus XL was temporarily released from its Earth-facing port on the Unity module to make room for the Soyuz MS-28 crew spacecraft that was scheduled to arrive the next day and dock to the Rassvet module. The Cygnus XL spacecraft, supporting the Northrop Grumman-23 commercial resupply services mission for NASA, was uninstalled on November 25, 2025, from the International Space Station. It remained attached to the station’s Canadarm2 robotic arm until Monday, December 1. This cleared the way for the arrival of the crewed Roscosmos (Russian) Soyuz MS-28 spacecraft.

The Cygnus XL spacecraft, supporting the Northrop Grumman-23 commercial resupply services mission for NASA, was removed by the robotics officer at the agency’s Mission Control Center in Houston using the space station’s Canadarm2 robotic arm. The Cygnus XL movement was coordinated between NASA, Northrop Grumman, and Roscosmos (Russia) to provide appropriate clearance for the arriving crewed Soyuz MS-28 spacecraft on November 27, 2025. NASA astronauts Jonny Kim and Zena Cardman monitored from inside the International Space Station. 

Cuba, officially the Republic of Cuba, is an island country in the Caribbean. It comprises 4,195 islands, islets and cays, including the eponymous main island and Isla de la Juventud. Situated at the junction of the Caribbean Sea, Gulf of Mexico, and Atlantic Ocean, Cuba is located east of the Yucatán Peninsula, south of both Florida (the United States) and the Bahamas, west of Hispaniola (Haiti and the Dominican Republic), and north of Jamaica and the Cayman Islands.

The Galápagos Islands (Spanish: Islas Galápagos) are an archipelago of volcanic islands in the Eastern Pacific, located around the equator, 900 km (560 mi) west of the mainland of South America. They form the Galápagos Province of the Republic of Ecuador.

Follow Expedition 73:

Expedition 73 Crew
Station Commander: Sergey Ryzhikov (Roscosmos)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov, Sergey-Kud Sverchkov, Sergei Mikaev
NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Credit: NASA's Johnson Space Center
Image Date: Nov. 25, 2025
Release Date: Dec. 1, 2025

#NASA #Space #ISS #Earth #Cuba #CaribbeanSea #GalapagosIslands #SoyuzMS28 #SoyuzMS28CrewSpacecraft #NorthropGrummanCygnusXL #CargoSpacecraft #Astronauts #Cosmonauts #HumanSpaceflight #SpaceLaboratory #JSC #UnitedStates #Russia #Россия #Roscosmos #Japan #JAXA #Expedition73 #STEM #Education

Friday, December 05, 2025

Planet Mars Images: Nov. 24-Dec. 5, 2025 | NASA's Curiosity & Perseverance Rovers

Planet Mars Images: Nov. 24-Dec. 5, 2025 | NASA's Curiosity & Perseverance Rovers

Mars 2020 - sol 1697
Mars 2020 - sol 1701
Mars 2020 - sol 1703
Mars 2020 - sol 1695
Mars 2020 - sol 1701
Mars 2020 - sol 1704
MSL - sol 4728
MSL - sol 4728

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Celebrating 13+ Years on Mars (2012-2025)
Mission Name: Mars Science Laboratory (MSL)
Rover Name: Curiosity
Main Job: To determine if Mars was ever habitable to microbial life. 
Launch: Nov. 6, 2011
Landing Date: Aug. 5, 2012, Gale Crater, Mars

Celebrating 4+ Years on Mars
Mission Name: Mars 2020
Rover Name: Perseverance
Main Job: Seek signs of ancient life and collect samples of rock and regolith (broken rock and soil) for return to Earth.
Launch: July 30, 2020    
Landing: Feb. 18, 2021, Jezero Crater, Mars

For more information on NASA's Mars missions, visit: mars.nasa.gov

Image Credits: NASA/JPL-Caltech/ASU/MSSS
Processing: Kevin M. Gill/Martian-Observer
Image Release Dates: Nov. 24-Dec. 5, 2025

#NASA #Space #Astronomy #Science #Planets #Mars #Astrobiology #Geology #CuriosityRover #MSL #MountSharp #GaleCrater #PerseveranceRover #Mars2020 #JezeroCrater #Robotics #SpaceTechnology #SpaceEngineering #MSSS #JPL #Caltech #UnitedStates #CitizenScience #KevinGill #STEM #Education

NASA Astronaut Jonny Kim Advances Research | International Space Station

NASA Astronaut Jonny Kim Advances Research | International Space Station

NASA astronaut Jonny Kim is wrapping up his first mission aboard the International Space Station in early December. During his stay, Kim conducted scientific experiments and technology demonstrations to benefit humanity on Earth and advance NASA’s Artemis campaign in preparation for future human missions to Mars. Take a look at examples of the science Kim completed during his mission: https://go.nasa.gov/4atrCZb

NASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky of Russia are poised to complete a 245-day space research mission when they undock at 8:41 p.m. EDT on Monday, Dec. 8, 2025, from the Prichal module inside the Soyuz MS-27 crew spacecraft. The trio will parachute back to Earth inside the Soyuz descent module for a landing in Kazakhstan at 12:04 a.m. on Tuesday, less than three-and-a-half hours later. 

NASA Astronaut Jonny Kim's Biography:

Follow Expedition 73:

Expedition 73 Crew
Station Commander: Sergey Ryzhikov (Roscosmos)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov, Sergey-Kud Sverchkov, Sergei Mikaev
NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Video Credit: NASA's Johnson Space Center
Duration: 1 minute, 17 seconds
Release Date: Dec. 5, 2025

#NASA #Space #ISS #Earth #Astronauts #JonnyKim #Cosmonauts #HumanSpaceflight #MicrogravityResearch #SpaceLaboratory #JSC #UnitedStates #Russia #Roscosmos #Japan #JAXA #Expedition73 #STEM #Education #HD #Video

¿Qué pasa en el cielo en diciembre 2025?

¿Qué pasa en el cielo en diciembre 2025?

Here are examples of skywatching highlights for the northern hemisphere in December 2025:

The 3I/ATLAS comet makes its closest approach to Earth, the Geminid meteor shower sparkles across the sky, and the Moon and Jupiter get close for a conjunction. 

0:00 Intro

0:13 3I/ATLAS

1:24 Geminid meteor shower

1:57 Moon + Jupiter conjunction

2:31 December Moon phases


Video Credit: NASA's Jet Propulsion Laboratory (JPL)/Chelsea Gohd
Duration: 3 minutes
Release Date: Dec. 5, 2025


#NASA #Astronomy #Space #Science #NASAenespañol #español #Comets #InterstellarComets #Comet3IATLAS #Planets #Jupiter #Earth #MeteorShowers #Geminids #Moon #Stars #SolarSystem #Nebulae #Galaxies #Constellations #MilkyWayGalaxy #Skywatching #JPL #Caltech #UnitedStates #Canada #Mexico #NorthernHemisphere #STEM #Education #HD #Video