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[00:00.12]Scientists have found strong evidence of salt water on the planet Mars,
[00:06.00]the U.S. space agency NASA announced Monday.
[00:11.08]NASA has found lines of "hydrated" salt minerals on Mars.
[00:17.40]Scientists say these minerals would require liquid water to be created.
[00:24.40]And where there's liquid water, they say, there could be life.
[00:29.88]Jim Green is the director of planetary science at NASA Headquarters.
[00:37.24]He said during a news conference
[00:40.00]that "today, we are revolutionizing our understanding of this planet."
[00:46.80]Doug McCuistion is the former head of NASA's Mars program.
[00:53.44]He told the Boston Herald that "if they are announcing that they have
[00:58.72]found easily accessible, freely flowing liquid water under the surface ...
[01:04.76]that has massive implications both for the potential for life on that planet and sustainability of humans."
[01:16.16]NASA has found evidence of water on Mars in the past.
[01:21.44]In March, NASA said there was once more water on Mars than in Earth's Arctic Ocean.
[01:28.76]They say more than four billion years ago,
[01:31.96]Mars was covered with water 137 meters deep.
[01:38.00]But nearly all of it has since evaporated into space.
[01:43.68]I'm Mario Ritter.