Two NASA Astrobiology PDF documents (12, 79 pages)

They are a 12 and 79 pages.

The first, NASA Astrobiology Program is from 2001. It gets 'good' about 6 to 7 pages in w/ talk about liquid water currently existing on Europa and Mars.

The latter, The Astrobiology Primer , from 2006 has two pages of contributors and a good, explanatory table of contents. Some topics are: "evolution of life" "biodiversity" "trees of life" and some pages on Mars/Europa and stars.

Enjoy, and for anyone interested in the topic, w/ more credible reads, G Scholar is a great tool for finding these sorts in peer-review papers, journals and books. Should anyone have anything to post similar, please do, I love reading these topics. Thanks!