How habitable was early Mars? Why did it become less hospitable? And could there be life there now?
Click here for original story, 3 Great Mysteries About Life on Mars
Source: New York Times Space & Cosmos
How habitable was early Mars? Why did it become less hospitable? And could there be life there now?
Click here for original story, 3 Great Mysteries About Life on Mars
Source: New York Times Space & Cosmos