Hubble Shows Evidence of Large Underground Ocean on Ganymede

From HubbleSite: “NASA’s Hubble Space Telescope observed a pair of auroral belts encircling the Jovian moon Ganymede. The belts were observed in ultraviolet light by the Space Telescope Imaging Spectrograph and are colored blue in this illustration. They are overlaid on a visible-light image of Ganymede taken by NASA’s Galileo orbiter. The locations of […]

Cassini Finds Evidence for Hydrothermal Activity on Saturn's Moon Enceladus

Cutaway view depicting the interior of Enceladus. Water, salts, organics, and methane make their way from the hydrothermal vents on the ocean bottom to the surface through cracks in the icy crust, erupting as geysers. Image Credit: NASA/JPL

The deep oceans on Earth are teeming with life, despite the cold and darkness, thanks to […]

ESA's Rosetta Spacecraft Begins Search for Signs of Life From Philae

From ESA, “Welcome to a Comet”: “Philae’s view of the cliffs at Abydos. One of the lander’s three feet can be seen in the foreground.” Image Credit: ESA/Rosetta/Philae/CIVA

Could it be possible that a lander the size of a washing machine, thought to be lost nearly four months ago following its passing into shadow, […]

Soyuz TMA-14M Crew to Depart Space Station Wednesday After 5.5-Month Mission

Barry “Butch” Wilmore (left) will hand over command of the International Space Station (ISS) to Terry Virts (right) on Tuesday, 10 March, ahead of his crew’s return to Earth. This ceremony will officially end Expedition 42 and mark the beginning of Expedition 43. Photo Credit: NASA

After more than five months in orbit, Soyuz […]

Ongoing Experiments, Maintenance, and Crew Departure Preparations Highlight Busy Week on ISS

NASA astronaut Terry Virts (left) tweeted this photo from the International Space Station earlier this week. Via @AstroTerry on Twitter, “Celebrating flight day 100 with @AstroSamantha and @AntonAstrey”

SPACE STATION WEEKLY UPDATE March 2 – March 8, 2015 — It was a full work week for the astronauts living on the International Space Station (ISS), […]

Plant Studies, Imaging Operations, and Spacewalks Highlight Busy Week in Orbit for Expedition 42

NASA astronauts Barry Wilmore and Terry Virts preparing the International Space Station for commercial crew traffic, which will begin flying to and from the orbiting outpost in the not too distant future. Photo Credit: NASA

SPACE STATION WEEKLY UPDATE Feb. 16 – Feb. 22, 2015: Last week the astronauts aboard the Internation Space Station (ISS) […]

Rosetta’s Valentine’s Day Flyby Encounter Produces Stunning Comet Close-Ups

Backside view of Comet 67P/Churyumov-Gerasimenko Four image mosaic of Comet 67P/Churyumov-Gerasimenko comprising images taken on 14 February 2015 at 10:15 GMT just prior to closest approach from a distance of 12.6 km from the comet centre (about 10.6 km from the surface). For the comet centre distance, the image scale is 1.1 m/pixel. In […]

Mapping Planet Earth: 15 Years Since STS-99 (Part 2)

The Outboard Antenna of the Shuttle Radar Topography Mission (SRTM) extends 200 feet (60 meters) into space atop a mast extended from Endeavour’s payload bay. Photo Credit: NASA

Fifteen years ago, this week, the six-member crew of STS-99—Commander Kevin Kregel, Pilot Dom Gorie, and Mission Specialists Janet Kavandi, Janice Voss, Germany’s Gerhard Thiele, and […]

Mapping Planet Earth: 15 Years Since STS-99 (Part 1)

Computer-generated image of Endeavour performing radar observations with instruments in her payload bay and affixed to the deployable Outboard Antenna on STS-99. Image Credit: NASA

At the dawn of the year 2000, more precise radar maps existed of Venus—thanks to NASA’s Magellan imaging spacecraft—than of our own Home Planet. Although areas of Earth had […]

Like Superman: ESA's IXV Spaceplane Makes Successful Research Flight

AND IT’S OFF: A Vega launch vehicle lofts ESA’s IXV spaceplane to its suborbital mission. Photo Credit: ESA–S. Corvaja

It wasn’t Superman, but a spaceplane; however, it sure appeared to travel “faster than a speeding bullet,” as it cleared the pad in four seconds.

At 13:40 GMT (8:40 EST) today, the flight of the […]