Mars Rover Finds Ancient Streambed Where Water Once Flowed
NASA's Mars rover Curiosity has discovered what appears to be an ancient streambed, suggesting that water once flowed in large volumes — perhaps hip-deep in places — across the Martian surface. [Full Story]
NEXT: Source of Monster Black Hole's Energy Jet Identified
Source of Monster Black Hole's Energy Jet Identified
A peek at swirling matter around a black hole is now pinpointing the tiny region where monstrous blasts of energy erupt from, researchers say. [Full Story]
NEXT: 'Avengers' in Space: NASA Astronaut Recounts Movie Nights and Life in Orbit
'Avengers' in Space: NASA Astronaut Recounts Movie Nights and Life in Orbit
Astronaut Joe Acaba is back on Earth after a months-long visit to the International Space Station, and is adjusting to life back on the ground. [Full Story]
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