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As seen on #Cosmos: Earth’s atmosphere, an extremely thin sheet of air from Earth's surface to the edge of space. The Earth is a sphere with a roughly 8000 mile diameter; the thickness of the atmosphere is about 60 miles. In this picture, taken from a spacecraft orbiting at 200 miles above the surface, we can see the atmosphere as the thin blue band between the surface and the blackness of space. If the Earth were the size of a basketball, the thickness of the atmosphere could be modeled by a thin sheet of plastic wrapped around the ball. Gravity holds the atmosphere to the Earth's surface. Within the atmosphere, very complex chemical, thermodynamic, and fluid dynamics effects occur. The atmosphere is not uniform; fluid properties are constantly changing with time and location. Image Credit: NASA #nasa #climate #earth #earthrightnow #cosmos #watchingcosmos; -
As seen on Cosmos: Venus! The forecast for Venus is cloudy, cloudy, cloudy. The dense carbon dioxide atmosphere of Venus shrouds the planet in a thick layer of clouds—and heats the surface to a scorching 460° C (860° F). Although similar to the Earth in size and mass, Venus' slightly closer orbit to the sun create for it a much thicker atmosphere and a much hotter surface. The thick atmosphere was photographed above in ultraviolet light in 1979 by the Pioneer Venus Orbiter. Venus's extremely uncomfortable climate was likely caused by a runaway greenhouse effect. Image Credit: NASA #nasa #venus #planets #climate #cosmos #watchingcosmos; -
“Red and Dead Galaxies” - Our Chandra X-ray Observatory is shedding new light on the mystery of why giant elliptical galaxies have few, if any, young stars. This new evidence highlights the important role that supermassive black holes play in the evolution of their host galaxies. Because star-forming activity in many giant elliptical galaxies has shut down to very low levels, these galaxies mostly house long-lived stars with low masses and red optical colors. Astronomers have therefore called these galaxies "red and dead”. Image credit: X-ray: NASA/CXC/Stanford Univ/N.Werner et al; Optical: DSS #nasa #chandra #space #galaxy #telescope #astronomy #science; -
Observing a Gigantic Eruption of Solar Material - A coronal mass ejection, or CME, surged off the side of the sun on May 9, 2014, and NASA's newest solar observatory caught it in extraordinary detail. This was the first CME observed by the Interface Region Imaging Spectrograph, or IRIS, which launched in June 2013 to peer into the lowest levels of the sun's atmosphere with better resolution than ever before. A video of the IRIS imagery shows how a curtain of solar material erupts outward at speeds of 1.5 million miles per hour. Image Credit: NASA #sun #solar #nasa #sdo #iris #science; -
IceBridge Concludes Arctic Field Campaign - Researchers with our Operation IceBridge have completed another successful Arctic field campaign. On May 23, NASA's P-3 research aircraft left Thule Air Base, Greenland, and returned to Wallops Flight Facility in Virginia marking the end of 11 weeks of polar research. During this campaign, researchers collected data on Arctic sea and land ice - both repeating measurements on rapidly changing areas and expanding coverage into new, unsurveyed regions. The mission also released two sea ice data products and provided a professional development opportunity for three science teachers. This image is a view of mountains and sea ice near Thule Air Base, Greenland, from the NASA P-3 on May 6, 2014. Image Credit: NASA/Michael Studinger #nasa #ice #icebridge #arctic #earth #earthrightnow;
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Orion Heat Shield Attached! The world's largest heat shield, measuring 16.5 feet in diameter, has been successfully attached to the Orion spacecraft. The heat shield is made from a single seamless piece of Avcoat ablator. It will be tested on Orion's first flight in December 2014 as it protects the spacecraft from temperatures reaching 4000 degrees Fahrenheit. The uncrewed flight, dubbed Exploration Flight Test-1(EFT-1), will test the spacecraft for eventual missions that will send astronauts to an asteroid and eventually Mars. EFT-1 will launch an uncrewed Orion capsule 3,600 miles into space for a four-hour mission to test several of its most critical systems. After making two orbits, Orion will return to Earth at almost 20,000 miles per hour, before its parachutes slow it down for a landing in the Pacific Ocean. Image Credit: NASA #nasa #orion #spacecraft #space #eft1 #path2mars; -
Violent Birth Announcement from an Infant Star - This Hubble image shows IRAS 14568-6304, a young star that is cloaked in a haze of golden gas and dust. It appears to be embedded within an intriguing swoosh of dark sky, which curves through the image and obscures the sky behind. This dark region is known as the Circinus molecular cloud. This cloud has a mass around 250 000 times that of the sun, and it is filled with gas, dust and young stars. Within this cloud lie two prominent and enormous regions known colloquially to astronomers as Circinus-West and Circinus-East. Each of these clumps has a mass of around 5000 times that of the sun, making them the most prominent star-forming sites in the Circinus cloud. The clumps are associated with a number of young stellar objects, and IRAS 14568-6304, featured here under a blurry fog of gas within Circinus-West, is one of them. ESA/Hubble & NASA Acknowledgements: R. Sahai, NASA JPL/ Serge Meunier #nasa #star #hst #hubble #esa #galaxy #cloud #science; -
We demonstrated that we can land an unmanned spacecraft on a rugged planetary surface in the pitch dark in a free-flight test Wednesday of the Morpheus prototype lander and Autonomous Landing Hazard Avoidance Technology, or ALHAT. The 98-second test began at 10:02 p.m. EDT, with the Morpheus lander launching from the ground over a flame trench and ascending more than 800 feet (244 m) into the dark Florida sky at Kennedy Space Center using only ALHAT's Hazard Detection System for guidance. The Hazard Detection System, assisted by three light detection and ranging (lidar) sensors, located obstacles -- such as rocks and craters -- and safely landed on the lunar-like hazard field a quarter mile away from the NASA Center. These new capabilities could be used in future efforts to deliver cargo to planetary surfaces. Image Credit: NASA/Mike Chambers #nasa #morpheus #ksc #spacecraft; -
Coming together - At the Operations and Checkout Building at Kennedy Space Center, the Orion crew module and heat shield are being moved into position for the mating operation. The heat shield will be tested on Orion's first flight in December, Exploration Flight Test-1 (EFT-1), an uncrewed flight that will put to the test the spacecraft that will send astronauts to an asteroid and eventually Mars on future missions. EFT-1 will launch an uncrewed Orion capsule 3,600 miles into space for a four-hour mission to test several of its most critical systems. After making two orbits, Orion will return to Earth at almost 20,000 miles per hour and endure temperatures near 4,000 degrees Fahrenheit, before its parachutes slow it down for a landing in the Pacific Ocean. Image Credit: NASA #nasa #eft1 #space #orion #asteroid #mars; -
The 'Serpent' Star-forming Cloud Hatches New Stars - Within the swaddling dust of the Serpens Cloud Core, astronomers are studying one of the youngest collections of stars ever seen in our galaxy. Infrared light has been assigned colors we see with our eyes, revealing young stars in orange and yellow, and a central parcel of gas in blue. This area is hidden in visible-light views, but infrared light can travel through the dust, offering a peek inside the stellar hatchery. The dark patch to the left of center is swaddled in so much dust, even the infrared light is blocked. It is within these dark wombs that stars are just beginning to take shape. Image Credit: NASA/JPL-Caltech/2MASS #nasa #spitzer #space #universe #space #stars #galaxy #science;
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#321liftoff! The Soyuz rocket launched today from the Baikonur Cosmodrome in Kazakhstan. Expedition 40 Soyuz Commander Maxim Suraev, of the Russian Federal Space Agency, Roscosmos, Flight Engineer Alexander Gerst, of the European Space Agency, ESA, and Flight Engineer Reid Wiseman of NASA will dock to the International Space Station at 9:48 p.m. EDT. The crew is slated to spend the next five and a half months aboard the orbiting laboratory. Image Credit: NASA/Joel Kowsky #nasa #roscosmos #esa #spacestation #launch #soyuz #iss #exp40; -
A colorful dart in the night sky! This 30-second exposure is of the Soyuz rocket launch from today at the Baikonur Cosmodrome in Kazakhstan. Expedition 40 Soyuz Commander Maxim Suraev, of the Russian Federal Space Agency, Roscosmos, Flight Engineer Alexander Gerst, of the European Space Agency, ESA, and Flight Engineer Reid Wiseman of NASA will dock to the International Space Station at 9:48 p.m. EDT. The crew is slated to spend the next five and a half months aboard the orbiting laboratory. Image Credit: NASA/Joel Kowsky #nasa #roscosmos #esa #spacestation #launch #soyuz #iss #exp40; -
Moving on up... to the spacecraft in the sky! Soyuz Commander Maxim Suraev of the Russian Federal Space Agency, Roscosmos, bottom, Flight Engineer Reid Wiseman of NASA, center, and Flight Engineer Alexander Gerst of the European Space Agency, ESA, top, wave farewell prior to boarding the Soyuz TMA-13M rocket for launch at 3:57 p.m. today at the Baikonur Cosmodrome in Kazakhstan. Suraev, Gerst, and Wiseman will spend the next six months aboard the International Space Station. Image Credit: NASA/Joel Kowsky #nasa #soyuz #exp40 #space #spacestation #321liftoff #launch #kazakhstan #iss; -
Three people head to space today! NASA astronaut Reid Wiseman, cosmonaut Maxim Suraev of the Russian Federal Space Agency and European Space Agency astronaut Alexander Gerst are set to launch aboard their Soyuz TMA-13M spacecraft from the Baikonur Cosmodrome in Kazakhstan at 3:57 p.m. EDT today (1:57 a.m. Thursday, Kazakh time). Less than six hours later, at 9:48 p.m., Soyuz Commander Suraev will dock the Russian spacecraft to the Rassvet module on the Earth-facing side of the station. In this image, the Soyuz is seen shortly after being raised into a vertical position on the launch pad on Monday. Image Credit: NASA/Joel Kowsky #nasa #soyuz #esa #roscosmos #space #spacestation #launch #321liftoff #iss; -
Sunsets on Titan Reveal the Complexity of Hazy Exoplanets - Using data collected by Cassini’s Visual and Infrared Mapping Spectrometer, or VIMS, while observing Titan’s sunsets, researchers created simulated spectra of Titan as if it were a planet transiting across the face of a distant star. The research helps scientists to better understand observations of exoplanets with hazy atmospheres. This image is an artist’s rendering of our Cassini spacecraft observing a sunset through Titan’s hazy atmosphere. Image credit: NASA/JPL-Caltech #nasa #titan #sunset #exoplanets #cassini #space #science;
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