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.
Learn more and get involved
Mercury Online
Space News & Opinion
NASA's Chandra X-ray Observatory reveals the relativistic engine driving the quadruple apparition.
A search in X-rays suggests life might be possible around two of our three neighboring stars.
ASP News
On the Inside
Tickets are now available for an evening of celebration for the ASP's 2019 Annual Awards, including the distinguished Catherine Wolfe Bruce Gold Medal. Each year we host a gala and ceremony to honor award recipients for their leadership in and advancement of astronomy and space science. Join us on November 9, 2019. Tickets are available online through November 3rd.
Free Public Event! The Astronomical Society of the Pacific is celebrating our 130th birthday with an astronomy-filled day on October 18, 2019 from 1pm - 10pm at San Francisco State University. Come and experience astronomy talks, planetarium shows, outdoor solar viewing, observatory viewing, and a birthday cake!
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The ASP provides activities and resources to help better understand and share the wonder of astronomy as the gateway to science literacy.
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