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The Universe in 101 words: Could Mars be bought back to life?

2 May 2017, 11:33 UTC
The Universe in 101 words: Could Mars be bought back to life?
(200 words excerpt, click title or image to see full post)

Above: The dessicated plains of Mars today.Well how did Mars die? Simple*: Its core froze, killing its protective magnetic field and letting the solar wind strip the atmosphere away. But...Simulations suggest that, if the field were replaced, Mars would naturally heal: CO2 (a greenhouse gas) would build up, increase temperatures, and evaporate more CO2 from the ice caps – a runaway effect, thickening the atmosphere. Ices would melt, forming oceans and an atmosphere thick enough to support plant life. NASA’s got an idea how: Station a giant electromagnet near the planet, to act as a prosthetic magnetic field. It’s a mad idea**… but those sometimes work… *By which I mean: Actually quite complicated, but I'll sum it up in a simple way because I've only got 101 words to get to the terraforming stuff..**Not in the sense of ‘let’s harness ten thousand rabbits into an army with hypnosis’ mad idea, but more like a ‘let’s actually run in the charity marathon this year’ kind of mad idea.You've read our science facts - have you tried our science fiction? You can pick up our book on Kindle, or as a paperback, by following this link......or, if you'd like to help us ...

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