Evidence of flowing liquid water on Mars: NASA
Scientists have long believed that water once flowed freely across the red planet and was responsible for forming its valleys and canyons
Liquid water has been observed on the planet Mars, the U.S. space agency NASA said Monday.
“Mars is not the dry, arid planet we thought of in the past,” Jim Green, NASA’s planetary science director, told a press conference.
“Under certain circumstances, liquid water has been found on Mars.”
Scientists have long believed that water once flowed freely across the red planet and was responsible for forming its valleys and canyons.
Major climate change about three billion years ago is believed to have changed all that, Green said.
“Today we’re revolutionizing our understanding of this planet,” Green said.
“Our rovers are finding there’s a lot more humidity in the air.”
The rovers searching the planet’s surface have also found that the soil is much more moist than anticipated.
Dark streaks running down slopes on the Martian surface were observed about four years ago.
Scientists did not have proof, however, that these streaks -- which would form in spring, grow by summer and then disappear by fall -- were actually water.
But after careful study and analysis, they are ready to say that these streaks are, in fact, water.
- NASA: New photos reveal Pluto's stunning geological diversity
- Mideast skygazers catch glimpse of Super Blood Moon
- Matt Damon recruits NASA to simulate life on Mars in ‘The Martian’
- NASA launches 'Mars Trek', navigating users across Mars
- Six scientists emerge from ‘life on Mars’ simulation
- NASA to test supersonic parachutes in flying saucer launch
- NASA astronomer names asteroid after Malala Yousafzai
- Meet Mohammad Sallam: Egypt’s potential Mars settler
- NASA reveals Mars has nitrogen, a key to life