International nonprofit organization and world leader in variable star research, with a mission to enable anyone to participate in scientific discovery.
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ALT A picture of an urban area at night with many extremely bright lights. Text is in a cloud shape: The struggle with light pollution is real.... Check out "Discover the Night" activities by the International Dark-Sky Association. International Dark Sky Week April 15 - 22 idsw.darksky.org/. AAVSO is proud to be an official outreach partner!
ALT AAVSO swirly star with the letters A A V S O besides. Text reads Our Annual Campaign has begun!
ALT A silhouette of a telescope against a twinkly night sky, pointing up at the AAVSO swirly star logo.
![Text reads, "How to [use AAVSOnet to remotely observe variable stars] April 1, 18:00 UT. A silhouette of a telescope at the center of the AAVSO swirly star. Sponsor Boyce-Astro's log of an open dome with two people pointing at the sky is in the corner.](https://pbs.twimg.com/media/Fskxe4PX0A49cTU.jpg?name=orig)
ALT Text reads, "How to [use AAVSOnet to remotely observe variable stars] April 1, 18:00 UT. A silhouette of a telescope at the center of the AAVSO swirly star. Sponsor Boyce-Astro's log of an open dome with two people pointing at the sky is in the corner.
ALT A smiling young woman outside next to her telescope, wearing a t-shirt that says "we can do it" with an image of a woman flexing her arm surrounded by math equations and scientific graphics.
ALT A small backyard telescope at the center of an AAVSO swirly star. Text reads: How to Automate Your Rig: A panel discussion. March 4, 19:00 UT. Boyce Astro Logo of an observatory dome in the corner.