Friday, February 06, 2026

Close-up: Galaxy NGC 1275 in The Perseus Cluster | Sloan Digital Sky Survey

Close-up: Galaxy NGC 1275 in The Perseus Cluster | Sloan Digital Sky Survey

This large mosaic from the Sloan Digital Sky Survey telescope plunges us into the heart of the gigantic Perseus cluster. Located at 250 million light-years from Earth, it is, in fact, a neighboring cluster of galaxies where its effervescence can be observed in detail.

The gas found between the galaxies reaches 60 million degrees Celsius and emits a wealth of x-ray light caught by NASA's Chandra space telescope (in blue). The giant elliptical galaxy NGC 1275 rests in the middle of the cluster, its spectacular filaments are imaged by the NASA/European Space Agency Hubble Space Telescope.

This galaxy harbors an active supermassive black hole that powers strong jets of particles into the cluster. Equipped with new receivers, the National Radio Astronomy Observatory (NRAO) Karl G. Jansky Very Large Array as allowed us to image the radio emission of these particles with an unprecedented level of detail (in pink), revealing a multitude of mysterious and complex structures.


Image Credits: Sloan Digital Sky Survey, NASA's Chandra X-ray Observatory, CXC, Hubble Space Telescope, ESA, NRAO, Marie-Lou Gendron-Marsolais (Université de Montréal), Julie Hlavacek-Larrondo (Université de Montréal), Maxime Pivin Lapointe
Release Date: May 5, 2017


#NASA #ESA #Astronomy #Space #Science #Galaxy #SeyfertGalaxy #AGN #GalacticFilaments #NGC1275 #Caldwell24 #EllipticalGalaxies #BlackHoles #PerseusA #PerseusCluster #PerseusConstellation #Cosmos #Universe #HST #STScI #NASAChandra #XrayAstronomy #SDSS #VLA #RadioAstronomy #NRAO #NSF #UnitedStates #STEM #Education

Galaxy NGC 1275 in The Perseus Cluster: Wide-field view

Galaxy NGC 1275 in The Perseus Cluster: Wide-field view

Active galaxy NGC 1275 is the central, dominant member of the large and relatively nearby Perseus Cluster of Galaxies. Wild-looking at visible wavelengths, the active galaxy is also a prodigious source of x-rays and radio emission. NGC 1275 accretes matter as entire galaxies fall into it, ultimately feeding a supermassive black hole at the galaxy's core. Narrowband image data used in this sharp telescopic image highlights the resulting galactic debris and filaments of glowing gas, some up to 20,000 light-years long. The filaments persist in NGC 1275, even though the turmoil of galactic collisions should destroy them.

What keeps the filaments together? 
Observations indicate that the structures, pushed out from the galaxy's center by the black hole's activity, are held together by magnetic fields. Also known as Perseus A, NGC 1275 itself spans over 100,000 light years and lies about 230 million light years away.


Image Credit & Copyright: Michal Wierzbinski & Hellas-Sky
Hellas-Sky website: https://hellas-sky.com
Release Date: Feb. 5, 2026

#NASA #ESA #Astronomy #Space #Science #Galaxy #SeyfertGalaxy #AGN #GalacticFilaments #NGC1275 #Caldwell24 #BlackHoles #PerseusA #PerseusCluster #PerseusConstellation #Cosmos #Universe #Astrophotography #MichalWierzbinski #Astrophotographer #GSFC #UnitedStates #STEM #Education #APoD

Comet C/2024 E1 (Wierzchos): View from Namibia

Comet C/2024 E1 (Wierzchos): View from Namibia

C/2024 E1 (Wierzchoś) is a hyperbolic Oort cloud comet, discovered on March 3, 2024, by Polish astronomer Kacper Wierzchoś. It reached perihelion on January 20, 2026, with apparent magnitude of around +6.5, visible in larger binoculars. It has a highly eccentric orbit with an inbound orbital period of millions of years and is expected to eventually be ejected from the Solar System. Cometary emission activity for C/2024 E1 has been driven by carbon dioxide (CO2). It crossed the celestial equator on November 17, 2025. As of December 7, 2025, the comet was about apparent magnitude 11 and less than 20 degrees from the Sun.

Namibia, officially the Republic of Namibia, is a country in southern Africa. Its borders include the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the northeast, approximating a quadripoint, Zimbabwe lies less than 200 meters (660 feet) away along the Zambezi River near Kazungula, Zambia.


Image Credit: Gerald Rhemann and Michael Jäger
Telescope: ASA Astrograph 12" f3.6 Camera: ZWO ASI 6200 MM Pro Exp.Time: LRGB 7.8/5/5/5 min
Location: Farm Tivoli, Namibia
Image Date: Jan. 26, 2026

#NASA #Astronomy #Space #Science #Comets #C2024E1Wierzchoś #OortCloud #SolarSystem #MilkyWayGalaxy #Cosmos #Universe #Astrophotography #GeraldRhemann #MichaelJäger #Astrophotographers #FarmTivoli #Namibia #Africa #STEM #Education

Astronaut Sophie Adenot is Ready for εpsilon Mission | European Space Agency

Astronaut Sophie Adenot is Ready for εpsilon Mission | European Space Agency

European Space Agency astronaut Sophie Adenot is preparing to launch to the International Space Station for her first space mission: εpsilon. After years of intensive training—from emergency procedures to spacewalk simulations—the countdown has begun. Flying alongside astronauts from NASA and Roscosmos (Russia), Sophie will join an international crew living and working together in space.

Aboard the International Space Station (ISS), Sophie will live and work in microgravity, conducting scientific research and performing a range of European—and French-led experiments that advance knowledge for life on Earth and in space.



Expedition 74 Crew
Station Commander: Sergey-Kud Sverchkov (Russia)
Roscosmos (Russia) Flight Engineer: Sergei Mikaev
NASA Flight Engineer: 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: European Space Agency (ESA)
Duration: 4 minutes
Release Date: Feb. 6, 2026


#NASA #Space #ISS #SpaceX #SpaceXCrew12 #CrewDragonSpacecraft #Astronauts #JessicaMeir #JackHathaway #SophieAdenot #France #Europe #ESA #Cosmonauts #AndreyFedyaev #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #InternationalCooperation #Expedition74 #Expedition75 #UnitedStates #STEM #Education #HD #Video

Glowing Shells of Gas: Planetary Nebula ESO 456-67 in Sagittarius | Hubble

Glowing Shells of Gas: Planetary Nebula ESO 456-67 in Sagittarius | Hubble


It may look like something from The Lord of the Rings, but this fiery swirl is actually a planetary nebula known as ESO 456-67. Set against a backdrop of bright stars, the rust-colored object lies in the constellation of Sagittarius (The Archer), in the southern sky.

Despite the name, these ethereal objects have nothing at all to do with planets; this misnomer came about over a century ago, when the first astronomers to observe them only had small, poor-quality telescopes. Through these, the nebulae looked small, compact, and planet-like—and so were labelled as such.

When a star like the Sun approaches the end of its life, it flings material out into space. Planetary nebulae are the intricate, glowing shells of dust and gas pushed outwards from such a star. At their centres lie the remnants of the original stars themselves—small, dense white dwarf stars.

In this image of ESO 456-67, it is possible to see the various layers of material expelled by the central star. Each appears in a different hue—red, orange, yellow, and green-tinted bands of gas are visible, with clear patches of space at the heart of the nebula. It is not fully understood how planetary nebulae form such a wide variety of shapes and structures. They can appear to be spherical,  elliptical, and others shoot material in waves from their polar regions. The can look like hourglasses or figures of eight, and others resemble large, messy stellar explosions—to name but a few.


Credit: ESA/Hubble & NASA
Acknowledgement: Jean-Christophe Lambry 
Release Date: Feb. 25, 2013

#NASA #ESA #Astronomy #Space #Science #Nebulae #PlanetaryNebulae #ESO45667 #SagittariusConstellation #MilkyWayGalaxy #Cosmos #Universe #HubbleSpaceTelescope #HST #Europe #GSFC #STScI #UnitedStates #STEM #Education

Thursday, February 05, 2026

Sun Releases Another Strong Solar Flare | NASA’s Solar Dynamics Observatory

Sun Releases Another Strong Solar Flare | NASA’s Solar Dynamics Observatory

The Sun emitted a strong solar flare, peaking at 7:13 a.m. Eastern Time on Wednesday, Feb. 4, 2026. This image was captured by NASA’s Solar Dynamics Observatory (SDO). 
In this composite image are all six X-class flares layered onto the Sun at once. The images come from NASA's Solar Dynamics Observatory (SDO). It observes the Sun in multiple wavelengths, using filters to reveal distinct traits.

The Sun emitted six X-class solar flares so far in February 2026, including a strong solar flare, peaking at 7:13 a.m. ET on February 4. NASA’s Solar Dynamics Observatory, watching the Sun constantly, captured an image of the event. This flare is classified as an X4.2 flare. X-class denotes the most intense flares, while the number provides more information about its strength.

NASA’s Solar Dynamics Observatory captured this image of a solar flare (first picture)—seen as the bright flash toward the upper middle—on Feb. 4, 2026. The image shows a subset of extreme ultraviolet light that highlights the extremely hot material in flares that is colorized in blue and red.

Image Description: The Sun against a black background. The Sun is colorized primarily in blue, with brighter purple areas scattered across the star showing higher activity areas. Toward the upper center of the star, there is a bright flash in white and red. It looks like an X—the solar flare.

Solar flares are powerful bursts of energy. Flares and solar eruptions can impact radio communications, electric power grids, navigation signals, and pose risks to spacecraft and astronauts.

To see how such space weather may affect Earth, please visit the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center https://spaceweather.gov/, the U.S. government’s official source for space weather forecasts, watches, warnings, and alerts. 

NASA works as a research arm of the nation’s space weather effort. NASA observes the Sun and our space environment constantly with a fleet of spacecraft that study everything from the Sun’s activity to the solar atmosphere, and to the particles and magnetic fields in the space surrounding Earth.


Image Credit: NASA/SDO/GSFC
Release Date: Feb. 5, 2026


#NASA #Astronomy #Space #Science #Earth #Moon #SpaceWeather #Stars #Sun #SolarFlares #CMEs #Sunspots #Ultraviolet #Plasma #MagneticFields #Astrophysics #Heliophysics #Physics #Spacecraft #Satellites #SDO #SolarSystem #GSFC #UnitedStates #Infographics #STEM #Education

A Chilled New York City | USGS Landsat 8 Earth Satellite

A Chilled New York City | USGS Landsat 8 Earth Satellite

Chunks of ice, appearing light blue in this false-color image, line the western shore of Manhattan in the Hudson River. Smaller rivers and lakes in the scene also appear frozen or partially frozen. The ground is snow-covered, and tall buildings cast long, dark shadows.

The New York metropolitan area was showing the effects of a prolonged cold spell in late January 2026. During a stretch of frigid weather, ice choked the Hudson River along Manhattan’s western shore.

The Operational Land Imager (OLI) on Landsat 8 captured this image of the wintry landscape around midday on January 28. The image is false-color (bands 5-4-3) to distinguish ice (light blue) from open water and snow. Vegetation appears red. Ice is abundant in the Hudson River and visible in smaller amounts in the East River, the Jacqueline Kennedy Onassis Reservoir in Central Park, and waterways in New Jersey.

Temperatures in New York City dropped below freezing on January 24 and stayed there for over a week. The high on January 28, the date of the image, was 23 degrees Fahrenheit (minus 5 degrees Celsius). Low temperatures and harsh wind chills gripped much of eastern North America over this period amid a surge of Arctic air.

Much of the ice in the image likely floated there from farther upriver, where tidal currents are weaker and salinity is lower. These conditions allow water to freeze sooner and at higher temperatures than the faster-flowing, brackish water near the river’s mouth, shown here. A complete freeze of the Hudson around Manhattan is unlikely, experts say, although it did occur back in 1888. Still, the ice buildup was substantial enough for NYC Ferry to suspend services for several days.

Iced-up rivers can have other implications, from flooding and infrastructure damage to changes in hydrologic processes that affect water quality and aquatic habitats.

Scientists, government agencies, and emergency responders are increasingly turning to remote sensing technologies such as synthetic aperture radar and hyperspectral imaging to track river ice. Improved monitoring can aid in water resource management and mitigate ice’s effects on infrastructure and ecosystems.

In addition to the river ice, other signs of winter were visible across New York. A fresh layer of snow coated the landscape following a winter storm, in which a weather station in Central Park recorded nearly 12 inches (30 centimeters) of accumulation on January 25. And the low angle of the midwinter Sun caused the tall buildings in Midtown and Lower Manhattan to cast long shadows.

In a neighboring borough on February 2, a shorter shadow was cast—this one by the weather-prognosticating groundhog known as Staten Island Chuck. Folklore holds that the sighting signals six more weeks of winter. When compared with data from the National Oceanic and Atmospheric Administration's National Centers for Environmental Information, the New York rodent was deemed the most accurate of his peer weather “forecasters.” This year, Chuck might be right, at least in the near term: the National Weather Service forecast called for below-average temperatures to persist, with Arctic air returning to the city by the weekend.

New York, often called New York City (NYC), is the most populous city in the United States. It is located at the southern tip of New York State on New York Harbor, one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with its respective county. It is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York, also called New York State, is a state located in the northeastern United States. Bordering New England to its east, Canada to the north, and Pennsylvania and New Jersey to the south, its territory extends into both the Atlantic Ocean and the Great Lakes.



Image Credit: Michala Garrison/Landsat data from U.S. Geological Survey
Text Credit: Lindsey Doermann
Image Date: Jan. 28, 2026


#NASA #Space #Science #Satellites #Landsat8 #Landsat #Planets #Earth #Weather #Winter #NYC #NewYorkCity #NewYork #EarthObservation #RemoteSensing #Environment #GSFC #USGS #UnitedStates #STEM #Education

Student CubeSats Deployed into Low-Earth Orbit | International Space Station

Student CubeSats Deployed into Low-Earth Orbit | International Space Station




A pair of CubeSats designed by college students from around the world is deployed into Earth orbit from a small satellite orbital deployer on the outside of the Japan Aerospace Exploration Agency's Kibo laboratory module. Students from Mexico, Italy, Thailand, Malaysia, and Japan designed the shoe-boxed sized satellites for a series of Earth observations and technology demonstrations.

The Japanese Experiment Module—Kibo—is Japan’s contribution to the International Space Station (ISS). Kibō (meaning 'Hope' in Japanese) is a Japanese science module developed by the Japan Aerospace Exploration Agency (JAXA). It is the largest single ISS module, and is attached to the Harmony module.

Follow Expedition 74:

Expedition 74 Crew
Station Commander: Sergey-Kud Sverchkov (Russia)
JAXA Flight Engineer (Japan): Kimiya Yui
Roscosmos (Russia) Flight Engineers: Oleg Platonov, Sergei Mikaev
NASA Flight Engineers: Mike Fincke, Zena Cardman, 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
Date: Feb. 3, 2026

#NASA #Space #ISS #Science #Earth #Satellites #CubeSats #Astronauts #AstronautPhotography #UnitedStates #Kibo #きぼう #Japan #日本 #JAXA #宇宙航空研究開発機構 #UnitedStates #Cosmonauts #Russia #Россия #Roscosmos #Роскосмос #HumanSpaceflight #SpaceLaboratory #InternationalCooperation #Expedition74 #STEM #Education

Planet Mars Images: Jan. 30-Feb. 5, 2026 | NASA's Curiosity & Perseverance Rovers

Planet Mars Images: Jan. 30-Feb. 5, 2026 | NASA's Curiosity & Perseverance Rovers

Mars 2020 - sol 1761
Mars 2020 - sol 1764
Mars 2020 - sol 1764
Mars 2020 - sol 1760
Mars 2020 - sol 1758
Mars 2020 - sol 1758
Mars 2020 - sol 1763
Mars 2020 - sol 1761

Become a monthly Friends of NASA supporter on our website: 
Friends of NASA (FoN) is an independent non-governmental organization (NGO) dedicated to building international support for peaceful space exploration, commerce, scientific discovery, and STEM education. 
We depend on public donations.
One-time Donations to Friends of NASA (PayPal) accepted here: 

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
Image Release Dates: Jan. 30-Feb. 5, 2026

#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

Aurora over Northern Norway | Earth Science

Aurora over Northern Norway | Earth Science



Astrophotographer Ivar Sandland: "Moonlight level at 80% in crispy cold winter and snow. No need for a headlamp hiking near Bodø at night."

Also known as the northern lights (aurora borealis) or southern lights (aurora australis), auroras are colorful, dynamic, and often visually delicate displays of an intricate dance of particles and magnetism between the Sun and Earth called space weather. When energetic particles from space collide with atoms and molecules in the atmosphere, they can cause the colorful glow that we call auroras.

Learn more about auroras: 
https://science.nasa.gov/sun/auroras/

Norway, officially the Kingdom of Norway, is a Nordic country located on the Scandinavian Peninsula in Northern Europe. The country shares a long eastern border with Sweden, and is bordered by Finland and Russia to the northeast.

Image Credit: Ivar Sandland
Location: Bodø, Northern Norway
Image Details: Sony A7IV, 14mm F1.8, 0.8s/ISO1600
Ivar's website: https://en.nordlandturselskap.no
Release Date: Feb. 4, 2026

#NASA #Space #Astronomy #Science #Planets #Earth #Aurora #AuroraBorealis #NorthernLights #SolarSystem #Sun #Astrophotography #Astrophotographer #IvarSandland #Bodø #Norway #Norge #UnitedStates #STEM #Education

A Galactic Quartet: NGC 6845 in Telescopium | Gemini South Telescope

A Galactic Quartet: NGC 6845 in Telescopium | Gemini South Telescope


A quartet of interacting galaxies is captured in this observation from Gemini South, one of the twin telescopes of the International Gemini Observatory, operated by the United States National Science Foundation (NSF) NOIRLab. The four galaxies in this image are collectively known as NGC 6845, and lie roughly 270 million light-years from Earth in a constellation named, appropriately, Telescopium. This constellation is one of a handful named after scientific instruments rather than animals or mythological figures.

The galaxies in NGC 6845 come in two varieties. The pair of galaxies at the top of this image are well-defined spiral galaxies whereas the two below them are disk-shaped lenticular galaxies. Connecting the galaxies is evidence of star-forming regions and filaments made of stars detached from their original galaxies. Being relatively close neighbors, the galaxies in NGC 6845 are interacting. These gravitational interactions are subtly distorting the galaxies in NGC 6845, and astronomers believe that the two spiral galaxies will eventually evolve into lenticular galaxies.

Gemini South Telescope:
https://noirlab.edu/public/programs/gemini-observatory/gemini-south/


Credit: International Gemini Observatory/NOIRLab/NSF/AURA/G. Gimeno, R. J. Díaz, H. Dottori
Image Processing: T.A. Rector (University of Alaska Anchorage/NSF NOIRLab), M. Zamani (NSF NOIRLab) & D. de Martin (NSF NOIRLab)
Release Date: Nov. 23, 2022


#NASA #Astronomy #Space #Science #Stars #Galaxies #NGC6845 #InteractingGalaxies #LenticularGalaxies #SpiralGalaxies #Cosmos #Universe #InternationalGeminiObservatory #GeminiSouthTelescope #GMOS #OpticalAstronomy #GeminiObservatory #NOIRLab #AURA #NSF #CerroPachón #Chile #UnitedStates #STEM #Education

SpaceX Starlink Satellites Reflecting Sunlight | International Space Station

SpaceX Starlink Satellites Reflecting Sunlight | International Space Station

NASA astronaut and former International Space Station flight engineer Don Pettit: "SpaceX Starlink satellites flashing like shooting stars with time exposure. Dozens could be seen in rapid succession near our orbital dawn and dusk, when their solar panels reflected sunlight at the proper angles!"

NASA astronaut Don Pettit returned to Earth on April 19, 2025, concluding a seven-month science mission aboard the International Space Station. Pettit spent 220 days in space, earning him a total of 590 days in space over the course of his four spaceflights. He orbited the Earth 3,520 times, traveling 93.3 million miles in low-Earth orbit.

Follow Expedition 74:

Expedition 74 Crew
Station Commander: Sergey-Kud Sverchkov (Russia)
Roscosmos (Russia) Flight Engineer: Sergei Mikaev
NASA Flight Engineer: Chris Williams

Image Credit: NASA's Johnson Space Center/D. Pettit
Release Date: Feb. 1, 2026

#NASA #Space #Astronomy #Science #ISS #Sun #Sunlight #Planets #Earth #SpaceX #StarlinkSatellites #Astronauts #DonPettit #AstronautPhotography #LongExposurePhotography #UnitedStates #Japan #JAXA #Cosmonauts #Russia #Roscosmos #HumanSpaceflight #SpaceLaboratory #InternationalCooperation #Expedition71 #Expedition72 #STEM #Education

Spiral Galaxies NGC 3314a and b: "Caught in a spiral" in Hydra | ESO

Spiral Galaxies NGC 3314a and b: "Caught in a spiral" in Hydra | ESO


The image shows a pair of overlapping spiral galaxies, NGC 3314a and b, in the top left, caught in a majestic cosmic dance—captured by European Southern Observatory’s VLT Survey Telescope (VST).

However, do not let the perspective fool you! 

They are, in fact, not interacting at all. The two galaxies, located between 117 and 140 million light-years away in the constellation of Hydra, are actually physically unrelated and only appear to overlap when viewed from Earth. This unique alignment gives astronomers the opportunity to measure many properties of the galaxies, such as how dust absorbs starlight, and hence gain insight into their composition and evolution.

There is another hidden secret in this picture if you look closely at the lower right region. Beyond this stunning cosmic dance you will find a faint yellowish smudge, the signature of an ultra-diffuse galaxy (UDG). UDGs are objects as large as the Milky Way but with 100–1,000 times fewer stars. These galaxies are extremely faint and lack star-forming gas, which makes them appear almost like a smudge in the night sky. This UDG, named UDG 32, is one of the faintest and most spread out galaxies in the Hydra I cluster.

This image was taken as part of a much larger project, the VST Early-type Galaxy Survey (VEGAS), whose goal is to investigate very faint structures in galaxy clusters—large groups of galaxies held together by gravity. The study, led by Enrichetta Iodice from the Istituto Nazionale di Astrofisica in Italy, suggests that UDG 32 may have formed out of the filaments stemming from NGC 3314a, but more observations are needed to confirm this.


Credit: ESO/Iodice et al.
Release Date: Nov. 8, 2021

#NASA #ESO #Astronomy #Space #Science #Galaxies #NGC3314a #NGC3314b #SpiralGalaxies #UDG32 #HydraConstellation #Cosmos #Universe #Astrophysics #VLT #VST #ParanalObservatory #Chile #Europe #STEM #Education

Wednesday, February 04, 2026

Wide-view: Galaxy Cluster Abell 3827 in Indus—Mass Map | Victor Blanco Telescope

Wide-view: Galaxy Cluster Abell 3827 in IndusMass Map | Victor Blanco Telescope

Galaxy clusters are massive collections of hundreds or even thousands of galaxies, bound together by their mutual gravitational attraction. Using the Dark Energy Camera (DEC) at Cerro Tololo Inter-American Observatory, a Program of the United States National Science Foundation (NSF) NOIRLab, astronomers are measuring weak gravitational lensing to map the distribution of mass in nearby galaxy clusters. As well as producing remarkable images like this one, the information will shed light on the relationships between the constituent parts of nearby galaxy clusters, such as gas, stellar populations, and dark matter.

The galaxy cluster Abell 3827 is the subject of this striking image. In addition to featuring a field of galaxies and foreground stars, the image is overlaid with a map with hues of red, blue and purple. Though they are attractive, these colors are not for decoration—they represent the distribution of mass in the heart of Abell 3827 with red showing the largest mass concentration.

Learn about the Víctor M. Blanco Telescope:
https://noirlab.edu/science/programs/ctio/telescopes/victor-blanco-4m-telescope


Credit: CTIO/NOIRLab/NSF/AURA
Release Date: June 4, 2020

#NASA #Astronomy #Space #Science #Galaxies #GalaxyCluster #Abell3827 #MassConcentrationMapping #GravitationalLensing #Astrophysics #IndusConstellation #Cosmos #Universe #VictorBlancoTelescope #CTIO #CerroTololo #Chile #NOIRLab #NSF #DECam #DOE #AURA #UnitedStates #STEM #Education

Close-up: Galaxy Cluster Abell 3827 in Indus—Mass Map | Victor Blanco Telescope

Close-up: Galaxy Cluster Abell 3827 in IndusMass Map | Victor Blanco Telescope

Galaxy clusters are massive collections of hundreds or even thousands of galaxies, bound together by their mutual gravitational attraction. Using the Dark Energy Camera (DEC) at Cerro Tololo Inter-American Observatory, a Program of the United States National Science Foundation (NSF) NOIRLab, astronomers are measuring weak gravitational lensing to map the distribution of mass in nearby galaxy clusters. As well as producing remarkable images like this one, the information will shed light on the relationships between the constituent parts of nearby galaxy clusters, such as gas, stellar populations, and dark matter.

The galaxy cluster Abell 3827 is the subject of this striking image. In addition to featuring a field of galaxies and foreground stars, the image is overlaid with a map with hues of red, blue and purple. Though they are attractive, these colors are not for decoration—they represent the distribution of mass in the heart of Abell 3827 with red showing the largest mass concentration.

Learn about the Víctor M. Blanco Telescope:
https://noirlab.edu/science/programs/ctio/telescopes/victor-blanco-4m-telescope


Credit: CTIO/NOIRLab/NSF/AURA
Release Date: June 4, 2020

#NASA #Astronomy #Space #Science #Galaxies #GalaxyCluster #Abell3827 #MassConcentrationMapping #GravitationalLensing #Astrophysics #IndusConstellation #Cosmos #Universe #VictorBlancoTelescope #CTIO #CerroTololo #Chile #NOIRLab #NSF #DECam #DOE #AURA #UnitedStates #STEM #Education

'Eyes in The Sky': Mrk 739 in Leo—Galaxies & Supermassive Black Holes Merge

'Eyes in The Sky': Mrk 739 in Leo—Galaxies & Supermassive Black Holes Merge

Do you ever get the feeling that you're being watched? 

This friendly-looking object is the result of two galaxies merging into one another, complete with a pair of eyes hiding two growing supermassive black holes and a swirling grin. Such mergers are rare in our galactic neighborhood. Mrk 739 is close enough (astronomically speaking) to study the event in detail, and thus gain a better understanding of the dramatic processes that take place during these cosmic mergers.

Note: The Markarian (Mrk) galaxies are a class of galaxies that have nuclei with excessive amounts of ultraviolet emissions compared with other galaxies. 

By using the MUSE instrument on the European Southern Observatory (ESO) Very Large Telescope (VLT), the team of astronomers, led by master’s student Dusán Tubín at the Pontificia Universidad Católica de Chile, were able to study the effects of the merger and the radiation emitted by the growing gigantic black holes. Their study answers questions about the motion of the galaxies, the age of their stars, and the elements they are made up of. They have found that one of these galaxies is much older than its companion, and that their merging process is at an early stage.

MUSE is a 3D spectrograph that takes images—known as “datacubes”—of the object being observed over thousands of wavelengths. With MUSE, astronomers are therefore able to map in great detail the properties of the objects they study, because each individual pixel contains an impressive amount of information. Obtaining these exciting insights into galaxy merging and evolution with MUSE is enough to make anyone smile.


Credit: ESO/Tubín et al.
Release Date: April 26, 2021


#NASA #ESO #Astronomy #Space #Science #Galaxies #Mrk739 #InteractingGalaxies #BlackHoles #GalacticMergers #LeoConstellation #Cosmos #Universe #Astrophysics #VLT #MUSE #ParanalObservatory #Chile #Europe #STEM #Education