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Recent Activity

Variable Star Observations in Database:

33,189,182 and Counting ...
Last Observation Received:

20 min 36 sec ago by KLO - Laszlo Kocsmaros (RS)

AY LYR   May 28.8944   <14.0Vis.   

Plot AY LYR light curve


Stellar News Feed

Massive Dying Star Goes Out With a Whimper Instead of a Bang

Now you see it, now you don’t: recording the death or a massive star (and the birth of a black hole), without a supernova explosion!

Read more here

Small telescopes discovered styrofoam-density exoplanet orbiting a bright star

A team from the KELT collaboration have discovered an exoplanet that is highly inflated, so that while it's only a fifth as massive as Jupiter, it is nearly 40 percent larger, making it about as dense as Styrofoam. The planet is orbiting the V = 8 Subgiant HD 93396 in the southern hemisphere.

Read more here

New multi-wavelength images of the Crab Nebula

Optical, x-ray and radio images combined, created a gorgeous montage of this bright Supernova which was first observed by Chinese astronomers in 1054.

Read more here

Safe Sunspot Observing

A great article by our President, Kristine Larsen, on safe observing of the Sun.

Read more here

Colliding stars will light up the night sky in 2022

In 2022, a pair of stars will merge and explode, becoming one of the brightest objects in the sky for a short period. The relevant peer-reviewed paper appeared on arXiv last week (

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