The Bonney Lake Chapter of the SAS is hosting International Observe the Moon Night, an annual event when the Moon is around first quarter ― a great phase for evening observing. Furthermore, a first-quarter Moon offers excellent viewing opportunities along the terminator (the line between night and day), where shadows enhance the Moon’s cratered landscape. The event will be held in Allen York Park. There will be telescopes set up to observe the moon, or feel free to bring your ... more

Globe at Night is an international citizen-science campaign to raise public awareness of the impact of light pollution by inviting citizen-scientists to measure & submit their night sky brightness observations. It's easy to get involved - all you need is computer or smart phone & follow these 6 Simple Steps!

Want help stepping into the back yard and pondering the cosmos while you're at home? Join a world-class astronomy presenter each week on Tuesdays and Thursdays at 11:30 AM Seattle time. We'll be using the FREE open-source software Stellarium (https://stellarium.org/) to teach you about the night sky. This class is open to the public, adults and students alike. Watch on our YouTube channel

Area astronomers including volunteers from the Seattle Astronomical Society will participate in viewing the early morning January 31st Total Lunar Eclipse from Solstice Park in West Seattle.

Beginning after sunset Wednesday, December 13th, upwards of 60 meteors per hour are expected to shower Earth until Moonrise at 4am on Thursday. The absence of moonlight, the Earth's "near perfect" intersection with Asteroid 3200 Phaethon's debris trail and a predicted peak meteor rate around midnight, makes this mid December meteor shower one of the best observing events of 2017. Area astronomers including volunteers from the Seattle Astronomical Society will be on hand to assist the ... more