Astronomical Society of the Pacific

It is the largest general astronomy education society in the world, with members from over 40 countries.

The ASP's mission is to promote public interest in and awareness of astronomy (and increase scientific literacy) through its publications, web site, and many educational and outreach programs. The NASA Night Sky Network – a community of more than 400 astronomy clubs across the U.S. that share their time and telescopes to engage the public with unique astronomy experiences. The ASP provides training and materials to enhance clubs outreach activities, and inspires more than four million people through their participation in 30,000+ plus events. Eclipse Ambassadors Off the Path is a NASA partner program to prepare 500 communities off the path of the 2024 Total Eclipse with the awe and science of solar eclipses. Partnering eclipse enthusiasts and undergraduate students create new partnerships with underserved audiences in their community. Reaching for the Stars: NASA Science for Girl Scouts – The ASP is partnered on a NASA project to create new astronomy badges for Girl Scouts, connect them with their local astronomy clubs, and train amateur astronomers to make their outreach more girl-friendly. The ASP also connects adult Girl Scout volunteers to NASA's Night Sky Network (NSN). My Sky Tonight – a set of research-based, science-rich astronomy activities that engage pre-kindergarten aged children, and trained hundreds of educators at museums, parks, and libraries across the U.S. on how to effectively engage their youngest visitors (ages 3–5) in astronomy. The AAS Astronomy Ambassadors Program – provides mentoring and training experiences for young astronomers just starting their careers. The American Astronomical Society, in partnership with the ASP, members of the Center for Astronomy Education (CAE), and other organizations active in science education and public outreach, has created the program, which involves a series of professional-development workshops and a community of practice designed to help improve participants communication skills and effectiveness in doing outreach to students and the public. On-the-Spot Assessment – a research-to-practice initiative led by the ASP (in collaboration with Oregon State University, the Portal to the Public Network via the Institute for Learning Innovation, and the National Radio Astronomy Observatory) to develop a set of embedded assessment strategies and professional development to support research scientists in effectively communicating science to the public. The Galileoscope Project – Developed in 2009 for the International Year of Astronomy, the Galileoscope has become the centerpiece for teaching about telescopes in many programs. As a key component of the Galileo Teacher Training Program, the Astronomical Society of the Pacific engaged hundreds of educators in professional development related to telescopes and the Galileoscope. Project PLANET – Leveraging resources developed as a part of the My Sky Tonight project to explore their usefulness in a formal, classroom setting. Project ASTRO – a national program that improves the teaching of astronomy and physical science (using hands-on inquiry-based activities) by pairing amateur and professional astronomers with 4th through 9th grade teachers and classes. Family ASTRO – a project that develops kits and games to help families enjoy astronomy in their leisure time and trains astronomers, educators, and community leaders. Astronomy from the Ground Up (AFGU) – Providing informal science educators and interpreters with new and innovative ways to communicate astronomy. AFGU is a growing community of hundreds of educators from museums, science centers, nature centers, and parks around the U.S., who are actively enhancing and expanding their capacity to address astronomy topics for their visitors. Classroom activities, videos, and resources in astronomy (many developed by the Society's educational staff) are sold through their online AstroShop or made available free through the website. The ASP assists with astronomy education and outreach by partnering with other organizations both in the United States and internationally, and organizes an annual meeting to promote the appreciation and understanding of astronomy.

The Astronomical Society of the Pacific is an affiliate of the American Association for the Advancement of Science.

The ASP makes several different awards annually: The Bruce Medal for lifetime contribution to astronomy research. The medal is named after Catherine Wolfe Bruce. The Klumpke-Roberts Award for outstanding contributions to the public understanding and appreciation of astronomy, named for Dorothea Klumpke-Roberts. The Gordon Myers Amateur Achievement Awards (formerly the Amateur Achievement Award), in recognition of significant contributions to astronomy by one not employed in the field of astronomy in a professional capacity. The Bart Bok Award, named in honor of astronomer Bart Bok, awarded jointly with the American Astronomical Society to outstanding student projects in astronomy at the International Science and Engineering Fair. The Thomas Brennan Award for exceptional achievement related to the teaching of astronomy at the high school level. The Maria and Eric Muhlmann Award for recent significant observational results made possible by innovative advances in astronomical instrumentation, software, or observational infrastructure. The Robert J. Trumpler Award, named in honor of astronomer Robert J. Trumpler, given to a recent recipient of a Ph.D degree with a particularly notable thesis. The Richard Emmons Award is given for a lifetime of contributions to the teaching of astronomy to college non-science majors. The Las Cumbres Amateur Outreach Award, established by Wayne Rosing and Dorothy Largay, seeks to honor outstanding educational outreach by an amateur astronomer to K-12 children and the interested lay public. The Arthur B.C. Walker II Award, first announced in 2016, for research and teaching with a substantial commitment to students from underrepresented groups.

The Donohoe Comet Medal (1890–1950). In July 1889 the ASP announced that a bronze medal for "the actual discovery of any unexpected comet" would be awarded on the basis of a $500 gift by Joseph A. Donohoe of San Francisco. The first award was made in March 1890 to W. R. Brooks for the discovery of the comet now known as 16P/Brooks. After the 250th medal had been awarded in 1950 the award was discontinued because photography had enabled the discovery of too many comets. The Comet Medal (1969–1974). In 1968 the ASP Board voted to create a new Comet Medal to be awarded once yearly to recognize "an outstanding nonprofessional astronomer" for "past contributions to the study of comets." The first award was made in 1969 to Reginald L. Waterfield. After 1974, the Comet Medal was discontinued.

Presidents of the ASP have typically served one to three year terms. Past presidents have included such notable astronomers as Edwin Hubble, George O. Abell, and Frank Drake. George Pardee, who later became Governor of the State of California, served as president in 1899.