Canadian Space Agency (CSA)
Canada's premier space sciences organization.
NASA's Origins Program
NASA's effort to answer the following two questions: "Where did we come from?" and "Are we alone?"
The Planetary Society
World's largest private space interest group, co-founded by Carl Sagan.
Astronomy Now Online
U.K.'s astronomy magazine. (Website not just the magazine) contains lots of great articles and resources for everyone interested in astronomy.
Australian Space Research Institute (ASRI)
ASRI's goals are to develop and advance Australian space science and technology by conducting, encouraging and promoting research in the field of space science and technology.
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