Tim Dean: Most people are probably familiar with just one atmosphere: our own. How does Earth’s atmosphere compare to the other planets that we know about?
Charley Lineweaver: There’s no place in our solar system today where we could land and then say: ‘Oh, this is nice. We can breathe.’ There’s no oxygen on the Moon. There’s no oxygen on Mars. There’s no oxygen on Venus, Saturn, Uranus, etc. The other planets are not suitable for aerobic respirers like us. There’s an effort tha...
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