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Don't miss out on out-of-this-world gifts! Place your bid before tomorrow, 11:59 PM ET!

https://www.32auctions.com/aavso110anniversary

Dec. 4 on Zoom: join us and Michael Poxon!

Learn about Young Stellar Objects!

https://us02web.zoom.us/webinar/register/2016382109054/WN_x0uxoJ1HSfOHjMHpn7PUKQ

New partnership

for exoplanet science

https://unistellaroptics.com/unistellars-aavso-collaboration/

https://www.aavso.org/press

AAVSO’s Annual Spectroscopy Workshop Broadens the Horizons of Citizen Science

https://www.aavso.org/press-2021-workshop

Welcome to the AAVSO!

New explorers are welcome.
YOU can be an astronomer.

https://www.youtube.com/watch?v=tgCB2lBRk8s&t=5s

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The mission of the AAVSO is to enable anyone, anywhere to participate in scientific discovery through variable star astronomy.

Resources

(VSX) Variable Star Index

/vsx

The Journal of the AAVSO

/apps/jaavso

Submit and Access Data

/databases

Tools and Observer Resources

/observers

Observing Sections

/observing-sections

Education

CHOICE Courses, Manuals, Videos

/education

AAVSO In Press

/press

Membership and Support

/join-aavso

The AAVSO is an equal opportunity and discrimination / harassment free environment.
Please read our policies HERE

AAVSO at a Glance

Variable Star Observations in Database:

4 7 , 7 9 2 , 6 5 5 and Counting ...

Last Observation Received:

12 sec ago by TFR - Franco Travaglino (IT)

X Cyg Nov 28.7847 6.10Vis.

Plot X Cyg light curve

VStar CHOICE Instructor Needed

Nov 29

2021 Webinar Speaker Bios

Nov 19

AAVSO Press

Nov 18

Happy 110th Birthday to the AAVSO!

Nov 18

Solar Bulletin - Volume 77, Number 10

Nov 17

News Archives

Our Stellar Partners

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Resources

Pick a Star

AAVSO at a Glance

Variable Star Observations in Database:

Last Observation Received:

Our Stellar Partners