NASA - National Aeronautics and Space Administration

We ordered a second mission from SpaceX to send our crews to the International Space Station. This is another important step in returning U.S. astronaut launches from U.S. soil and increase the time crews can dedicate to scientific research, which is helping prepare astronauts for deep space missions, including the ‪#‎JourneyToMars‬. Details: http://go.nasa.gov/2aB2Ysh ‪#‎LaunchAmerica‬

Five years after departing Earth, and a month after slipping into orbit around Jupiter, our Juno spacecraft will begin falling back toward the planet on Jul 31 for another pass, this time with its scientific eyes wide open. More: http://go.nasa.gov/2aAY6mG

Gaze at a long-dead star. These rippling wisps of ionized gas are located some 160,000 light-years away. The explosion that formed the gas was an example of an especially energetic and bright variety of supernova producing the faint glow captured here by the Hubble Space Telescope. More: http://go.nasa.gov/2anyHcQ

New findings suggest gullies on modern Mars are not being formed by flowing liquid water. Details: http://go.nasa.gov/2anv7Q2

What happens to the heart in space? Research done on the International Space Station will help us understand. This and more on 'Space to Ground,' your weekly space station update. Watch: https://youtu.be/hJl5J8M2H-Q Question? Use ‪#‎SpaceToGround‬

Planet hunting heats up! Our Transiting Exoplanet Survey Satellite (TESS) will bring the search for life on distant planets closer to home. Launching in 2017-2018, TESS will identify planets orbiting the brightest stars just outside our solar system using what’s known as the transit method. Details: http://go.nasa.gov/2aykfly

Witness in-person a water landing test of the Orion spacecraft, which will help carry our astronauts deeper into space than ever before, at an Aug 25 ‪#‎NASASocial‬ in Virginia. Apply now: http://go.nasa.gov/2ayjc5v

As hurricane season unfolds, a helpful set of eyes mounted on the International Space Station allows scientists to observe massive storms from a special angle. Watch: https://youtu.be/N57kgXWHTvs

Supermassive black holes in the universe are like a raucous choir singing in the language of X-rays. When black holes pull in surrounding matter, they let out powerful X-ray bursts. This song of X-rays, coming from a chorus of millions of black holes, fills the entire sky -- a phenomenon astronomers call the cosmic X-ray background. More: http://go.nasa.gov/2ay6xzp

Astronomers have used data from our Chandra X-ray Observatory to make a discovery that may have profound implications for understanding how the magnetic field in our sun and stars like it are generated. More: http://go.nasa.gov/2aktvqq

Big on social media? We're inviting 100 of our followers to see the progress being made on sending humans to Mars. Visit us in-person on Aug. 17 & 18 in Louisiana, and Mississippi, for behind the scenes tours and to see the mighty RS-25 engine test firing. Deadline to apply is today. Register now: http://go.nasa.gov/2ako9vi

Let our apps guide you on a journey of exploration across the Earth, through the solar system and beyond. Want to learn the intricacies of rocket science? We've got an app for that. Want to explore the Red Planet? Ditto. Want a view of our changing planet? Check. Or maybe all you want is our official NASA app that let's you explore and discover the latest images, videos, mission information, news, feature stories, tweets, NASA TV and featured content. Download your favorites: http://go.nasa.gov/2ak7ibO

Scientists have been stumped as to why temperatures in Jupiter’s upper atmosphere are comparable to those found at Earth, yet Jupiter is more than five times the distance from the sun. New research suggests that Jupiter’s Great Red Spot may be the mysterious heat source. Details: http://go.nasa.gov/2aizjAB

Today we're taking you to Palmdale, California to learn about our ‪#‎EarthExpedition‬ ATom (Atmospheric Tomography) mission, a world survey of the atmosphere.

It is not a strict circumnavigation of the world, but our Atmospheric Tomography, or ATom, mission to fly down the Pacific Ocean then up the Atlantic is about as close as it gets. Set your alarms: Today at 6pm ET we're taking you to Palmdale, California to learn about this ‪#‎EarthExpedition‬ ATom via Facebook Live at https://www.facebook.com/nasaearth

Beginning July 28, our flying laboratory aboard the DC-8 aircraft will journey with 42 scientists and operations crew on a 26-day journey from nearly pole to pole and back again. The first of four deployments that will take place over the next three years, they'll be measuring a suite of more than 200 gases as well as airborne particles from the remotest parts of the atmosphere to better understand the processes that govern how various greenhouse gases cycle around the world.

Build it. Test it. Then, Fly it. We're prepping hardware, testing systems & readying to send humans on a ‪#‎JourneytoMars‬: http://nasa.tumblr.com/…/14806…/build-it-test-it-then-fly-it

The loneliest young star. Alone on the cosmic road, far from any known celestial object, a young, independent star is going through a tremendous growth spurt. It was first detected as a source of X-ray light in 2009 and has been launching “jets” of material into the gas and dust around it. More: http://go.nasa.gov/2auDGvI

Wow, stunning aurora captured by NASA Astronaut Jeff Williams aboard the International Space Station. Auroras are a space weather phenomenon that occur when electrically-charged electrons and protons collide with neutral atoms in the upper atmosphere. The dancing lights of the aurora provide a spectacular show for those on the ground, but also capture the imaginations of scientists who study the aurora and the complex processes that create them.