Sunday, August 05, 2018

SpaceX Dragon Departure | International Space Station

The SpaceX Dragon resupply ship, on its 15th Commercial Resupply Services mission (CRS-15) for NASA, is seen prior to robotic flight controllers releasing the spacecraft using the International Space Station’s robotic arm. Expedition 56 Flight Engineer Serena Auñon-Chancellor of NASA monitored its departure.

Dragon’s thrusters were then fired to move the spacecraft a safe distance from the station before SpaceX flight controllers in Hawthorne, California, commanded its deorbit burn. The capsule splashed down in the Pacific Ocean, where the SpaceX recovery team will retrieve the capsule and its more than 3,800 pounds of cargo, including a variety of technological and biological studies.

NASA and the Center for the Advancement of Science in Space (CASIS), the non-profit organization that manages research aboard the U.S. National Laboratory portion of the space station, will receive time-sensitive samples and begin working with researchers to process and distribute them within 48 hours of splashdown.

Dragon is the only space station resupply spacecraft currently capable of returning cargo to Earth, and this was the second trip to the orbiting laboratory for this spacecraft. SpaceX launched its 15th NASA-contracted commercial resupply mission to the station June 29 from Space Launch Complex 40 from Cape Canaveral Air Force Station in Florida on a Falcon 9 rocket that also previously launched NASA’s TESS mission to study exoplanets.

Credit: Russian Cosmonaut Oleg Artemyev/Roscosmos
Image Date: August 3, 2018


#NASA #Space #ISS #Science #Earth #SpaceX #Dragon #CRS15 #ElonMusk #Resupply #Cargo #Freighter #Commercial #Research #Astronauts #UnitedStates #Expedition56 #Human #Spaceflight #Spacecraft #Cosmonaut #OlegArtemyev #Roscosmos #Роскосмос #Russia #Россия #Photography #STEM #Education #OrbitalPerspective #OverviewEffect

Saturday, August 04, 2018

NASA Astronaut Victor Glover to Fly SpaceX Crew Dragon

Congratulations, Victor!
NASA astronaut Victor Glover is seen during a NASA event where it was announced that he, and NASA astronaut Mike Hopkins are assigned to the first mission to the International Space Station onboard SpaceX’s Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon were announced during the event.

NASA Astronaut Victor Glover's Biography
https://www.nasa.gov/astronauts/biographies/victor-j-glover/

Credit: NASA/Bill Ingalls
Release Date: August 3, 2018


#NASA #Earth #Space #ISS #SpaceX #ElonMusk #CrewDragon #Spacecraft #Falcon9 #Rocket #Astronaut #VictorGlover #Crew #Commercial #CommercialCrew #Human #Spaceflight #Technology #Kennedy #KSC #Spaceport #Florida #LaunchAmerica #UnitedStates #History #STEM #Education

Friday, August 03, 2018

NASA Astronaut Suni Williams to Fly Boeing's Starliner

Congratulations, Suni!
NASA astronaut Suni Williams is seen during a NASA event where it was announced that she, and NASA astronaut Josh Cassada are assigned to the first mission to the International Space Station onboard Boeing’s CST-100 Starliner, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon were announced during the event.

NASA Astronaut Suni Williams' Biography
https://www.nasa.gov/astronauts/biographies/sunita-l-williams/

Credit: NASA/Bill Ingalls
Release Date: August 3, 2018


#NASA #Earth #Space #ISS #Boeing #Starliner #CST100 #Spacecraft #Rocket #ULA #Atlas5 #Astronaut #SuniWilliams #Crew #Commercial #CommercialCrew #Human #Spaceflight #Technology #Kennedy #KSC #Spaceport #Florida #LaunchAmerica #UnitedStates #History #STEM #Education

NASA Astronaut Nicole Aunapu Mann to Fly Boeing's Starliner

Congratulations, Nicole!
NASA astronaut Nicole Aunapu Mann is seen during a NASA event where it was announced that she, NASA astronaut Eric Boe, and Boeing astronaut Chris Ferguson are assigned to the Boeing CST-100 Starliner Crew Test Flight to the International Space Station, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon were announced during the event. 

NASA Assigns Commercial Crews | International Space Station

First Test Flights, Missions on Commercial Spacecraft
NASA introduced to the world on Aug. 3, 2018, the first U.S. astronauts who will fly on American-made, commercial spacecraft to and from the International Space Station—an endeavor that will return astronaut launches to U.S. soil for the first time since the space shuttle’s retirement in 2011. The agency assigned nine astronauts to crew the first test flight and mission of both Boeing’s CST-100 Starliner and SpaceX’s Crew Dragon. The astronauts are, from left to right: Sunita Williams, Josh Cassada, Eric Boe, Nicole Mann, Christopher Ferguson, Douglas Hurley, Robert Behnken, Michael Hopkins and Victor Glover.

“Today, our country’s dreams of greater achievements in space are within our grasp,” said NASA Administrator Jim Bridenstine. “This accomplished group of American astronauts, flying on new spacecraft developed by our commercial partners Boeing and SpaceX, will launch a new era of human spaceflight. Today’s announcement advances our great American vision and strengthens the nation’s leadership in space.”

The agency assigned nine astronauts to crew the first test flight and mission of both Boeing’s CST-100 Starliner and SpaceX’s Crew Dragon. NASA has worked closely with the companies throughout design, development and testing to ensure the systems meet NASA’s safety and performance requirements.

“The men and women we assign to these first flights are at the forefront of this exciting new time for human spaceflight,” said Mark Geyer, director of NASA’s Johnson Space Center in Houston. “It will be thrilling to see our astronauts lift off from American soil, and we can’t wait to see them aboard the International Space Station.”

Starliner Test Flight Astronauts

Eric Boe was born in Miami and grew up in Atlanta. He came to NASA from the Air Force, where he was a fighter pilot and test pilot and rose to the rank of colonel. He was selected as an astronaut in 2000 and piloted space shuttle Endeavour for the STS-126 mission and Discovery on its final flight, STS-133.

Christopher Ferguson is a native of Philadelphia. He is a retired Navy captain, who piloted space shuttle Atlantis for STS-115, and commanded shuttle Endeavour on STS-126 and Atlantis for the final flight of the Space Shuttle Program, STS-135. He retired from NASA in 2011 and has been an integral part of Boeing's CST-100 Starliner program.

Nicole Aunapu Mann is a California native and a lieutenant colonel in the Marine Corps. She is an F/A-18 test pilot with more than 2,500 flight hours in more than 25 aircraft. Mann was selected as an astronaut in 2013. This will be her first trip to space.

Boeing’s Starliner will launch aboard a United Launch Alliance (ULA) Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida.

Crew Dragon Test Flight Astronauts

Robert Behnken is from St. Ann, Missouri. He has a doctorate in engineering and is a flight test engineer and colonel in the Air Force. He joined the astronaut corps in 2000 and flew aboard space shuttle Endeavour twice, for the STS-123 and STS-130 missions, during which he performed six spacewalks totaling more than 37 hours.

Douglas Hurley calls Apalachin, New York, his hometown. He was a test pilot and colonel in the Marine Corps before coming to NASA in 2000 to become an astronaut. He piloted space shuttle Endeavor for STS-127 and Atlantis for STS-135, the final space shuttle mission.

SpaceX’s Crew Dragon will launch aboard a SpaceX Falcon 9 rocket from Launch Complex 39A at Kennedy Space Center in Florida.

After each company successfully completes its crewed test flight, NASA will begin the final process of certifying that spacecraft and systems for regular crew missions to the space station. The agency has contracted six missions, with as many as four astronauts per mission, for each company.

Starliner First Mission Astronauts

Josh Cassada grew up in White Bear Lake, Minnesota. He is a Navy commander and test pilot with more than 3,500 flight hours in more than 40 aircraft. He was selected as an astronaut in 2013. This will be his first spaceflight.

Sunita Williams was born in Euclid, Ohio, but considers Needham, Massachusetts, her hometown. Williams came to NASA from the Navy, where she was a test pilot and rose to the rank of captain before retiring. Since her selection as an astronaut in 1998, she has spent 322 days aboard the International Space Station for Expeditions 14/15 and Expeditions 32/33, commanded the space station and performed seven spacewalks.

Crew Dragon First Mission Astronauts

Victor Glover is from Pomona, California. He is a Navy commander, aviator and test pilot with almost 3,000 hours flying more than 40 different aircraft. He made 400 carrier landings and flew 24 combat missions. He was selected as part of the 2013 astronaut candidate class, and this will be his first spaceflight.

Michael Hopkins was born in Lebanon, Missouri, and grew up on a farm near Richland, Missouri. He is a colonel in the Air Force, where he was a flight test engineer before being selected as a NASA astronaut in 2009. He has spent 166 days on the International Space Station for Expeditions 37/38, and conducted two spacewalks.

Additional crew members will be assigned by NASA’s international partners at a later date.

NASA’s continuous presence on the space station for almost 18 years has enabled technology demonstrations and research in biology and biotechnology, Earth and space science, human health, physical sciences. This research has led to dramatic improvements in technology, infrastructure and medicine, and thousands of spinoff technologies that have improved quality of life here on Earth.

The new spaceflight capability provided by Boeing and SpaceX will allow NASA to maintain a crew of seven astronauts on the space station, thereby maximizing scientific research that leads to breakthroughs and also aids in understanding and mitigating the challenges of long-duration spaceflight.

NASA’s Commercial Crew Program is facilitating the development of a U.S. commercial crew space transportation capability with the goal of achieving safe, reliable and cost-effective access to and from the International Space Station and low-Earth orbit. The public-private partnerships fostered by the program will stimulate growth in a robust commercial space industry and spark life-changing innovations for future generations.

Learn more about NASA’s Commercial Crew Program at:
https://www.nasa.gov/commercialcrew

Credit: NASA
Release Date: August 3, 2018


#NASA #Earth #Space #ISS #SpaceX #ElonMusk #CrewDragon #Falcon9 #Rocket #Boeing #Spacecraft #Starliner #CST100 #Crew #Commercial #CommercialCrew #ULA #Atlas5 #Test #Mission #Human #Spaceflight #Technology #Kennedy #KSC #Spaceport #Florida #LaunchAmerica #UnitedStates #History #STEM #Education

Crews to Fly U.S. Commercial Spacecraft Announced | NASA

Preparing to Launch U.S. Astronauts on American Soil in 2019
The first U.S. astronauts who will fly on American-made, commercial spacecraft to and from the International Space Station, wave after being announced, Friday, Aug. 3, 2018 at NASA's Johnson Space Center in Houston, Texas. The astronauts are, from left to right: Victor Glover, Mike Hopkins, Bob Behnken, Doug Hurley, Nicole Aunapu Mann, Chris Ferguson, Eric Boe, Josh Cassada, and Suni Williams. The agency assigned the nine astronauts to crew the first flight

“For the first time since 2011, we are on the brink of launching American astronauts on American rockets from American soil.”
—NASA Administrator Jim Bridenstine

Credit: NASA/Bill Ingalls
Release Date: August 3, 2018


#NASA #Earth #Space #ISS #SpaceX #ElonMusk #CrewDragon #Falcon9 #Rocket #Boeing #Spacecraft #Starliner #CST100 #Crew #Commercial #CommercialCrew #ULA #Atlas5 #Human #Spaceflight #Technology #Kennedy #KSC #Spaceport #Florida #LaunchAmerica #UnitedStates #History #STEM #Education

Mars & The Moon | International Space Station

ESA Astronaut Alexander Gerst: "On our horizon. Moon and Mars in one photo. These two companions are the undiscovered continents of our time. They are within our reach. What would you feel if you stood on their surface, looking back at Earth?"

Follow Alexander and the Horizons mission:
http://bit.ly/AlexanderGerstESA and on bit.ly/HorizonsBlogESA

Credit: European Space Agency (ESA)/NASA–A. Gerst
Release Date: August 2, 2018


#NASA #Space #ISS #Science #Earth #Moon #Mars #Planet #RedPlanet #JourneyToMars #ExploreFarther #SolarSystem #Exploration #Humanity #Astronaut #AlexanderGerst #Horizons #Europe #Germany #Deutschland #Expedition56 #Human #Spaceflight #Spacecraft #Photography #STEM #Education #International #OrbitalPerspective #OverviewEffect

Thursday, August 02, 2018

Planet Uranus | NASA Voyager 2

The dark side of Uranus imaged by a departing Voyager 2 spacecraft on Feb. 2, 1986 from a distance of 1.189 million kilometers.

Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune, and both have different bulk chemical composition from that of the larger gas giants Jupiter and Saturn. For this reason, scientists often classify Uranus and Neptune as "ice giants" to distinguish them from the gas giants. Uranus's atmosphere is similar to Jupiter's and Saturn's in its primary composition of hydrogen and helium, but it contains more "ices" such as water, ammonia, and methane, along with traces of other hydrocarbons. It is the coldest planetary atmosphere in the Solar System, with a minimum temperature of 49 K (−224 °C; −371 °F), and has a complex, layered cloud structure with water thought to make up the lowest clouds and methane the uppermost layer of clouds. The interior of Uranus is mainly composed of ices and rock.

Like the other giant planets, Uranus has a ring system, a magnetosphere, and numerous moons. The Uranian system has a unique configuration among those of the planets because its axis of rotation is tilted sideways, nearly into the plane of its solar orbit. Its north and south poles, therefore, lie where most other planets have their equators. In 1986, images from Voyager 2 showed Uranus as an almost featureless planet in visible light, without the cloud bands or storms associated with the other giant planets. Observations from Earth have shown seasonal change and increased weather activity as Uranus approached its equinox in 2007. Wind speeds can reach 250 meters per second (900 km/h; 560 mph).
(Source: Wikipedia)

Credit: NASA/JPL
Processing: Jason Major
Image Date: Feb. 2, 1986
Release Date: July 31, 2018

#NASA #Astronomy #Space #Science #Uranus #Planet #Atmosphere #SolarSystem #Voyager2 #Voyager #Spacecraft #JPL #Caltech #STEM #Education

SpaceX Dragon & Canadarm2 | International Space Station

The SpaceX Dragon cargo craft is pictured attached to the International Space Station's Harmony module as the orbital complex was flying over the South Atlantic Ocean between the southern tips of South America and Africa. The Dragon space freighter is framed on the left by the Canadarm2 robotic arm and a pair of the station's main solar arrays.

Credit: NASA/JSC
Image Date: July 14, 2018


#NASA #Space #ISS #Science #Earth #Atlantic #Ocean #SpaceX #Dragon #Sun #Sunlight #Resupply #Cargo #Freighter #Commercial #Canadarm2 #Robotics #CSA #Canada #Astronauts #UnitedStates #Expedition56 #Human #Spaceflight #Spacecraft #JSC #Photography #STEM #Education #OrbitalPerspective #OverviewEffect

Skywatching: What's Up for August 2018 | NASA/JPL

What's up in the night sky this month? The best meteor shower of the year! The Perseids peak on a moonless summer night—from 4 p.m. on the 12th until 4 a.m. on the 13th EDT. Thanks to a new moon, the days before and after the peak will also provide nice, dark skies. The best time to look for shooting stars is from a few hours after twilight until dawn on the days surrounding the peak.

For more star parties and astronomy events near you, visit: https://nightsky.nasa.gov

Credit: NASA's Jet Propulsion Laboratory (JPL)
Duration: 2 minutes, 17 seconds
Release Date: August 1, 2018


#NASA #Astronomy #Space #Science #Skywatching #MeteorShower #Meteors #Perseids #Perseus #Comet #SwiftTuttle #Moon #Mars #Venus #Jupiter #Saturn #Planets #SolarSystem #Stars #Constellations #MilkyWay #Galaxy #JPL #Pasadena #California #UnitedStates #STEM #Education #HD #Video

Saturn's Rings by Sunlight | NASA Cassini

Color-composite of raw images acquired in visible light by NASA's Cassini spacecraft on Nov. 4, 2006.

Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius about nine times that of Earth. It has only one-eighth the average density of Earth, but with its larger volume, Saturn is over 95 times more massive. Saturn is a gas giant because it is predominantly composed of hydrogen and helium. It lacks a definite surface, though it may have a solid core.
(Source: Wikipedia)

The Cassini spacecraft ended its mission on Sept. 15, 2017.

For more information about the Cassini-Huygens mission visit: https://saturn.jpl.nasa.gov and http://www.nasa.gov/cassini

The Cassini-Huygens mission was a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, California, managed the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center was based at the Space Science Institute in Boulder, Colorado.

Credit: NASA/JPL-Caltech/SSI/Jason Major
Image Date: November 4, 2006
Release Date: August 1, 2018


#NASA #Astronomy #Science #Space #Saturn #Planet #Rings #SolarSystem #Exploration #Cassini #Spacecraft #JPL #California #UnitedStates #ESA #ASI #History #STEM #Education

Wednesday, August 01, 2018

Boeing Starliner | International Space Station

Preparing to Launch Astronauts from U.S. Soil
In this illustration, a Boeing CST-100 Starliner spacecraft is shown in low-Earth orbit. NASA is partnering with Boeing and SpaceX to build a new generation of human-rated spacecraft capable of taking astronauts to the International Space Station and expanding research opportunities in orbit. Boeing's upcoming Orbital Flight Test is part of NASA’s Commercial Crew Transportation Capability contract with the goal of returning human spaceflight launch capabilities to the United States.

Image Credit: Boeing
Release Date: August 1, 2018


#NASA #Space #ISS #Science #Earth #Boeing #Starliner #CST100 #Orbital #Test #Flight #CommercialCrew #Transportation #Astronauts #LaunchAmerica #UnitedStates #Expedition56 #Human #Spaceflight #Spacecraft #Art #Illustration #STEM #Education #OrbitalPerspective #OverviewEffect

SpaceX Crew Dragon | International Space Station

Preparing to Launch Astronauts from U.S. Soil
In this illustration, a SpaceX Crew Dragon spacecraft is shown in low-Earth orbit. NASA is partnering with Boeing and SpaceX to build a new generation of human-rated spacecraft capable of taking astronauts to the International Space Station and expanding research opportunities in orbit. SpaceX's upcoming Demo-1 flight test is part of NASA’s Commercial Crew Transportation Capability contract with the goal of returning human spaceflight launch capabilities to the United States.

SpaceX’s Crew Dragon will launch on the company’s Falcon 9 rocket from Kennedy Space Center's Launch Complex 39A.

After completion of SpaceX's uncrewed and crewed flight tests, NASA will review the flight data to verify the systems meet the requirements for certification. Upon NASA certification, SpaceX is slated to fly six crew missions to the International Space Station beginning in 2019 and continuing through 2024.

Image Credit: SpaceX
Release Date: August 1, 2018

#NASA #Space #ISS #Science #Earth #SpaceX #CrewDragon #Demo1 #Flight #CommercialCrew #Transportation #Astronauts #LaunchAmerica #UnitedStates #Expedition56 #Human #Spaceflight #Spacecraft #ESA #Art #Illustration #STEM #Education #OrbitalPerspective #OverviewEffect

Tuesday, July 31, 2018

NASA's 60th Anniversary (1958-2018)

Friends of NASA Celebrates its 10th Anniversary (2008-2018)
From 2018 through 2022, NASA is marking a series of important milestones—the 60th anniversary of the agency’s founding by Congress in 1958, and the 50th anniversary of the Apollo missions that put a dozen Americans on the Moon between July 1969 and December 1972.

Celebrations already are under way. Some are complete, some are scheduled in the coming months, and some are still being planned.

July 29, 2018 marked 60 years since President Dwight D. Eisenhower established NASA as a U.S. government agency by signing Public Law 58-568, the National Aeronautics and Space Act. The act consolidated several federal and military research organizations, including the National Advisory Committee for Aeronautics, under one agency.

The new agency was given responsibility to plan, direct and conduct U.S. civil aeronautics and space activities and share the results of those activities as widely as practicable. NASA opened for business about two months later, on Oct. 1, 1958—the date NASA observes as its birthday.

NASA kicked off its 60th anniversary Jan. 31 by remembering the 1958 launch of the first U.S. satellite, Explorer 1, from Cape Canaveral, Florida. An experiment on the satellite discovered belts of charged particles trapped in space by Earth’s magnetic field, now known as the Van Allen Belts.

The celebrations continued June 1-2 with "Space, the Next Frontier," a tribute to NASA by the National Symphony Orchestra Pops at the Kennedy Center for the Performing Arts in Washington. The center is named for President John F. Kennedy, who had not only a vision for cultural advancement, but also a vision for technological advancement in the form of landing Americans on the Moon. Kennedy’s legacy to the space program is highlighted along with six decades of NASA achievements in an exhibition at the Kennedy Center’s Hall of Nations May 27-June 3.

The public will be invited to celebrate with the agency in September and October. Special activities are being planned at several NASA visitor centers and other locations across the United States. Details will be announced as they become available.

NASA’s celebration of all things Apollo will begin Oct. 11, the 50th anniversary of the launch of Apollo 7, the first of the missions to carry a crew into space. On this day, at the National Air and Space Museum in Washington, the U.S. Mint will unveil the design for an Apollo 11 commemorative coin that will go on sale in January 2019.

In December, NASA will join the National Air and Space Museum in recalling the 50th anniversary of the flight of Apollo 8, whose crew of three spent Christmas 1968 in orbit around the Moon.

The focus will turn to Apollo 11 in July 2019. Celebrations are planned in Washington and at NASA centers that were crucial to the success of the Apollo Program. On July 19, NASA TV will broadcast live from the refurbished Apollo Mission Operations Control Room at NASA’s Johnson Space Center and several other locations with Apollo connections coast to coast.

Learn more: https://www.nasa.gov/60
Friends of NASA: http://www.friendsofnasa.org

The National Aeronautics and Space Administration is an independent agency of the executive branch of the Federal government of the United States responsible for the civilian space program, as well as aeronautics and aerospace research.

Friends of NASA is an independent non-governmental organization (NGO) dedicated to building international support for peaceful space exploration, commerce, scientific discovery and STEM education. We rely on public donations for support.

Credit: NASA/Friends of NASA (FoN)
Release Date: July 29, 2018


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NASA 60th: How It All Began (1958-2018)


Friends of NASA Celebrates its 10th Anniversary (2008-2018)
Congress passed the National Aeronautics and Space Act, on July 16 and President Eisenhower signed it into law on July 29, 1958. NASA opened for business on Oct. 1, 1958, with T. Keith Glennan as our first administrator. Our history tells a story of exploration, innovation and discoveries. The next 60 years, that story continues.

Learn more: https://www.nasa.gov/60
Friends of NASA: http://www.friendsofnasa.org

The National Aeronautics and Space Administration is an independent agency of the executive branch of the Federal government of the United States responsible for the civilian space program, as well as aeronautics and aerospace research.

Friends of NASA is an independent non-governmental organization (NGO) dedicated to building international support for peaceful space exploration, commerce, scientific discovery and STEM education.
We rely on public donations for support.

Video Credit: NASA
Article Credit: Friends of NASA (FoN)
Duration: 5 minutes, 45 seconds
Release Date: July 29, 2018


#NASA #Space #Science #Earth #Moon #Mars #SolarSystem #Astronomy #History #NASA60 #Anniversary #President #Eisenhower #Government #UnitedStates #Civilian #Agency #Research #Exploration #Aerospace #Aeronautics #Aviation #Astronauts #JourneyToMars #FriendsOfNASA #FoN10 #STEM #Education #HD #Video

Sahara Desert Sandstorm | International Space Station

U.S. Astronaut Ricky Arnold: "A massive sandstorm rolls across the Sahara."

The Sahara is the largest hot desert and the third largest desert in the world after Antarctica and the Arctic. Its area of 9,200,000 square kilometers (3,600,000 sq mi) is comparable to the area of China or the United States. The name 'Sahara' is derived from a dialectal Arabic word for "desert", ṣaḥra.

The desert comprises much of North Africa, excluding the fertile region on the Mediterranean Sea coast, the Atlas Mountains of the Maghreb, and the Nile Valley in Egypt and Sudan. It stretches from the Red Sea in the east and the Mediterranean in the north to the Atlantic Ocean in the west, where the landscape gradually changes from desert to coastal plains. To the south, it is bounded by the Sahel, a belt of semi-arid tropical savanna around the Niger River valley and the Sudan Region of Sub-Saharan Africa. The Sahara can be divided into several regions including: the western Sahara, the central Ahaggar Mountains, the Tibesti Mountains, the Aïr Mountains, the Ténéré desert, and the Libyan Desert.
(Source: Wikipedia)

Credit: NASA Astronaut Ricky Arnold/JSC
Release Date: July 31, 2018


+NASA Earth Observatory
+NASA Johnson Space Center
+NASA

#NASA #Space #ISS #Science #Earth #Sahara #Sandstorm #صحرا #Desert #Africa #Atlantic #Ocean #RedSea #Astronaut #RickyArnold #UnitedStates #Expedition56 #Human #Spaceflight #Spacecraft #Photography #STEM #Education #OrbitalPerspective #OverviewEffect #الصحراء الكبرى