Here are a few Astrobiology links to get you started. Links specific to weekly topics can be found on the Schedule page.

NASA Links:

Astrobiology at NASA

NASA Astrobiology Institute

Astrobiology glossary - at the NASA Astrobiology Institute

NASA Jet Propulsion Laboratory

Exobiology at NASA

Astrobiology at Other Universities:

Astrobiology at UCLA

Penn State Astrobiology Research Center

Other Astrobiology or Astronomy Links:

Astrobiology at Woods Hole

SETI

The Planetary Society

Astronomy Picture of the Day