Life in the Solar System

I don't think a month's gone by lately without some major revelation in the Wild And Wacky Solar System department, and excitingly, a lot of those revelations seem to have to do with life—as in xenobiology or the possibility thereof. It's probably redundant to say there are some very, very cool novels in the following:

• Europa probably has enough oxygen in its ice-covered ocean to support complex life.*
• The methane in Mars's atmosphere may be a by-product of life.**
• There is water on the Moon. No, really. 
• There may be life on the Moon too.***
• There may also be water (and life?) on Saturn's moon Enceladus.

And finally, even though the Orion nebula isn't part of the solar system, there are life-enabling molecules there, too.****

*io9

**io9

***io9
**** @sandykidd