333: Crabulo.us
Dear Hank & John
00:00
The News From Mars
Researchers have found evidence that suggests mars had liquid water flowing on it as recently as, probably after 700 years ago. Scientists are pretty dang sure that Mars had liquid water three billion years ago. And they've been using its spectrometers and cameras to study rocks. Some of those rocks have water molecules in them, forming what are called hydrated minerals.
Transcript
Play full episode
