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
Events @the ASP, ASP Insider, Learn@ASP, and AstroShop Educational Materials
On the Inside
Space News & Opinion
The newest issue of Mercury (Vol. 51 no. 3+4) is available to members, and this double issue features recent spacecraft results, tips for hosting events relating to the upcoming solar eclipses, the intertwined history of amateur astronomy and professional astronomy, news about the long-sought star catalog from ancient observer Hipparchus, and more!
In archival spacecraft data of Venus, planetary scientists found evidence of active volcanic activity.