Re: Wrong size
I agree; the lack of a magnetosphere on Mars is a big problem. A magnetosphere doesn't just prevent any liveable atmosphere from being blown away by the solar wind but also diverts an awful lot of very nasty ionising radiation.
I can't understand why people who should really know better keep pushing the idea of terraforming Mars...
...at least until they can also come up with a means of re-liquifying Mar's relatively small core which, without the radioactives to help keep it hot, is just going to cool down and re-solidify again relatively quickly.
Biting the hand that feeds IT
