The Astronomical Society of the Pacific is an international non-profit scientific and educational organization,
founded in 1889, that works to increase understanding and appreciation of astronomy.
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Space News & Opinion
The Winter 2020 issue (vol. 49 no. 1) of Mercury magazine is online for ASP members, featuring a goodbye to Spitzer, kicking off a busy decade for Mars, and paying tribute to Katherine Johnson.
Two interstellar travelers have visited the solar system in as many years—how many more are out there?