no one knows, we just discovered.
Many scientists believe there was because robots on the planet have found traces of water.
Mars lost its water (or it all froze) fairly recently . . . about 1 million years ago.
There have not been any such discoveries on Mars.
mars was born about 4.6 billion years ago
30 years ago
about 4.5 billions years ago.
mars has had frozen water since is was cretated buy God, about 4000 years ago.
Many scientists believe there was because robots on the planet have found traces of water.
Mars lost its water (or it all froze) fairly recently . . . about 1 million years ago.
Earth, but there could have been water in Mars years ago.
No, but there is fossil evidence to suggest that there was very simple forms of life (bacteria) on Mars many years ago when the planet still had an atmosphere and unfrozen water.
There have not been any such discoveries on Mars.
mars was born about 4.6 billion years ago
There is currently no evidence to suggest that people lived on Mars in the past. Scientists are still exploring the possibility of past microbial life on Mars, but there is no known evidence of past human civilization on the planet.
11,600 years ago.
the are long, narrow channels that were most likely carved out of water millions of years ago. hope this helps :)
no, but we think it might have done many millions of years ago