
HiRISE: 45,000 Mars Orbits and Counting
True to its purpose, NASA's Mars Reconnaissance Orbiter, or MRO, the spacecraft that began orbiting Mars a decade ago, has delivered huge advances in knowledge about the Red Planet.
According ... more
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Working Toward 'Seamless' Infrared Maps of Titan
Each of these two montages shows four synthetic views of Titan created using data acquired by the visual and infrared mapping spectrometer (VIMS) on board NASA's Cassini spacecraft between 2004 and ... more
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New U.S.-European Sea Level Satellite Will Help Safeguard Ships at Sea
Planet captures first light from Pelican-3 satellite as constellation expands
Trump signs memorandum to deploy U.S. National Guard troops to Memphis
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Opportunity moves to new locations to the southwest
Opportunity is exploring the south side of 'Marathon Valle' located on the rim of Endeavour crater. The rover is up on the slopes of 'Knudsen Ridge'.
The objective is to identify specific outc ... more
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Mars Express keeps watch on frosty Martian valleys
Nestled within the fractured rim of a vast impact basin on Mars are valley floors dusted in frost.
At 2200 km wide and up to 9 km deep, the Hellas Basin is the largest impact crater on Mars. This s ... more
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Timeless thoughts on the definition of time
The earliest definitions of time and time-interval quantities were based on observed astronomical phenomena, such as apparent solar or lunar time, and as such, time as measured by clocks, and freque ... more
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For bacteria, life in space is better than on Earth
Scientists are exploring long-term space travel from every conceivable angle. For a team of researchers at the University of California, Davis, the angle is bacteria. ... more
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Ancient Polar Ice Reveals Tilting of Earth's Moon
New NASA-funded research provides evidence that the spin axis of Earth's moon shifted by about five degrees roughly three billion years ago. The evidence of this motion is recorded in the distributi ... more
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