ASA on Thursday said the Curiosity rover, which in August landed on Mars on an investigative mission, had found definitive evidence that water existed on Mars long ago, suggesting that the Red Planet may have once supported life. NASA said photographs of the Curiosity's landing site indicated that it was once the bed of a swiftly flowing, waist-high river. Specifically, scientists said the size, shape, and placement of the terrain's pebbles and gravel suggested the presence of a river. Scientists have long speculated that water once existed on the now-dry planet, but Curiosity's photographs offer the firmest evidence to date to support that theory.
THE WEEK'S AUDIOPHILE PODCASTS: LISTEN SMARTER
- Why atheism doesn't have the upper hand over religion
- 31 TV shows to watch in 2014
- The world's dumbest idea: Taxing solar energy
- Attack of the invasive species
- He said he was leaving. She ignored him.
- 14 wonderful words with no English equivalent
- Why I'm a pro-life liberal
- Which states get screwed worst by the Electoral College?
- Why would a young person today be religious?
- What would a U.S.-Russia war look like?
Subscribe to the Week