NASA's Mars Exploration Rover Project received confirmation from Mars on May 1 that the Opportunity rover is back under ground control, executing a sequence of commands sent by the rover team. Opportunity is no longer in standby automode and has resumed normal operations.
During a moratorium on commanding this month while Mars passed nearly behind the sun - a phase called solar conjunction -- NASA's Mars Exploration Rover Opportunity entered a type of standby mode.
NASA is inviting members of the public to submit their names and a personal message online for a DVD to be carried aboard a spacecraft that will study the Martian upper atmosphere.
The DVD will be in NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft, scheduled for launch in November.
NASA's newest scientific rover is set for testing May 3 through June 8 in the highest part of Greenland.
The robot known as GROVER, which stands for both Greenland Rover and Goddard Remotely Operated Vehicle for Exploration and Research, will roam the frigid landscape collecting measurements to help scientists better understand changes in the massive ice sheet.
Scientists have used Chandra to make a detailed study of an enormous cloud of hot gas enveloping two large, colliding galaxies. This unusually large reservoir of gas contains as much mass as 10 billion Suns, spans about 300,000 light years, and radiates at a temperature of more than 7 million degrees.
With several weeks of science flights in the books, researchers with NASA's Operation IceBridge are on the way to completing another successful campaign to maintain and expand a dataset that started with NASA's ICESat in 2003, and gather additional Arctic ice measurements that can improve computer models of sea and land ice. Since the start of the campaign in mid-March, the IceBridge team has measured sea ice, mapped sub-ice bedrock and gathered data on Greenland's glaciers.
The Herschel observatory, a European space telescope for which NASA helped build instruments and process data, has stopped making observations after running out of liquid coolant as expected.
The European Space Agency mission, launched almost four years ago, revealed the universe's "coolest" secrets by observing the frigid side of planet, star and galaxy formation.
NASA's Cassini spacecraft has provided scientists the first close-up, visible-light views of a behemoth hurricane swirling around Saturn's north pole. Scientists will be studying the hurricane to gain insight into hurricanes on Earth, which feed off warm ocean water. Although there is no body of water close to these clouds high in Saturn's atmosphere, learning how these Saturnian storms use water vapor could tell scientists more about how terrestrial hurricanes are generated and sustained.
On Saturday, NASA declared the winners of the 20th NASA Great Moonbuggy Race at the U.S. Space & Rocket Center in Huntsville, Ala.
Team 1 from Teodoro Aguilar Mora Vocational High School of Yabucoa, Puerto Rico, won first place in the high school division; racers from the University of Puerto Rico at Humacao claimed the college-division trophy.
NASA's Cassini spacecraft has provided the first direct evidence of small meteoroids breaking into streams of rubble and crashing into Saturn's rings.
These observations make Saturn's rings the only location besides Earth, the moon and Jupiter where scientists and amateur astronomers have been able to observe impacts as they occur.
NASA's Hubble Space Telescope captured an image of Comet ISON on April 10, when the comet was slightly closer than Jupiter’s orbit at a distance of 386 million miles from the Sun (394 million miles from Earth).
Even at that great distance the comet is already active as sunlight warms the surface and causes frozen volatiles to sublimate.