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World leader in variable star research
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AAVSO 3 h
About 12 billion years ago, an enormous galaxy was home to 300+ billion suns...but suns "quickly" stopped forming there. The scientists used spectroscopic observations to measure this galaxy (XMM-2599) and determine its distance.
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AAVSO 4. velj
Sebastian Otero (AAVSO staffer) used NASA's TESS data to determine that Theta Carinae is the brightest heartbeat star known thus far. It's the central star of the southern open cluster IC 2602, visible with the naked eye at V= 2.74. Below: tet Car light curve of NASA'S TESS data
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AAVSO 3. velj
We hope you all join us in supporting Girls Who Code through Tweeting :) (For info: )
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AAVSO 31. sij
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AAVSO 29. sij
Just wanted to share! Citizen scientists discover a type of aurora previously undocumented! Nice, pretty, short, and sweet time-lapse video included :)
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AAVSO proslijedio/la je tweet
MSSL Solar Group 29. sij
First light observations from DKIST have been released ☀️🔭 We’re looking forward to getting our hands on some data! Well done to all involved.
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AAVSO 21. sij
Congratulations, Dennis! At , Dennis Conti (American Association of Variable Star Observers & Howard Astronomical League) was honored with the Chambliss Amateur Achievement Award. For the article on the AAS award recipients (congratulations!):
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AAVSO 17. sij
We are loving the growing number of people renewing their AAVSO membership! If you haven't already, you can continue to reap the full benefits of AAVSO by renewing too!
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AAVSO 17. sij
For each Twitter post with through Feb. 2, Olay will donate $1 (up to $500,000) to Girls Who Code, to increase support for young women in STEM (science, technology, engineering and mathematics) fields! Hashtag away :)
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AAVSO 17. sij
The light curves are attracting a lot of attention. The star seems to be lingering at 1.5 mag now! is one of the stars we recommend in our 10 star tutorial for beginner observers! Check it out at
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AAVSO 10. sij
A 2016 by astronomer Tabetha Boyajian is a great presentation on , explanations for data and thinking outside the box, and !
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AAVSO 9. sij
AAVSO president, Gordon Myers, discussing the program and our observer capabilities during the town hall.
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AAVSO 8. sij
data on discussed at the by Dr. Andrea Dupree. Is it still dimming?
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AAVSO 8. sij
As a tribute to an amazing astronomer, Vera C. Rubin, who discovered dark matter, the NSF is naming their Large Synoptic Survey Telescope in her honor.
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AAVSO 8. sij
Prediction on the eruption of V Sge in less than a century using data. Thanks for the research, LSU, and thanks to the observers who enabled this research!
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AAVSO 6. sij
The Turbulent Life of Two Supermassive Black Holes Caught in a Galaxy Crash--"ALMA’s high sensitivity and resolution are crucial to learn[ing]." Credit: ALMA (ESO/NAOJ/NRAO), E. Treister; NRAO/AUI/NSF, S. Dagnello; NASA/ESA Hubble
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AAVSO 6. sij
The president, Gordon Myers, discussing light curves with astronomers at the AAVSO booth (#308) of the meeting.
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AAVSO 5. sij
A heartfelt thank you to everyone who sent us wishes for happy holidays and the new year!
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AAVSO 3. sij
We know the end of the year is hectic, so a huge thank you to the majority of AAVSO members who renewed their membership for 2020! Been meaning to renew, but haven't? Feel free to click the link to do so now: Below: Members enjoying a 2019 AAVSO field trip
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AAVSO 23. pro
Join the 62% of AAVSO members who have already renewed their membership for 2020! Please help us reach our 100% renewal goal by 12/31! (Below: AAVSO members enjoying our 108th Annual Meeting)
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