Skip to main content

The dimming star Betelgeuse is acting weird. Here's how to spot it in Orion's shoulder.

Betelgeuse and its constellation, Orion, as seen in the evening sky in February 2020.
Betelgeuse and its constellation, Orion, as seen in the evening sky in February 2020. (Image credit: <a href="">Starry Night</a> software)

One of the brightest stars you'll see in the sky these days is Betelgeuse, whose red tones provide a fun skywatching target in February.

This monster star is about 1,000 times the size of our sun, according to NASA, and sits on the shoulder of the famous constellation Orion. The star is variable, meaning that it brightens and dims periodically. Lately, it's been dimming more, leading scientists to speculate that Betelgeuse could be somewhat close to a supernova explosion, in which the star would run out of gas to burn, then blow up.

You can easily find Betelgeuse in the constellation Orion anytime between November and February. RIght now, in New York City, Betelgeuse is rising in daylight, so you'll see it as soon as the sky darkens enough. The star is remaining above the horizon until a few hours before dawn. You can check your local times using SkySafari, a free app for Android or iPhone.

Related: The brightest planets in February's night sky: How to see them (and when)

Here's how to track down Betelgeuse: Once you go outside, give your eyes a few minutes to get adjusted to the darkness. Then turn to the southwestern sky in the Northern Hemisphere (the northwestern sky in the Southern Hemisphere) and look for the distinctive star pattern of Orion, centered on the three stars of its belt.

If you imagine Orion as its namesake, "the hunter," Betelgeuse marks the left-hand shoulder. The star is so bright and red, even in light-polluted areas, that you can't miss it. Betelgeuse is easily visible to the eye, and you won't see much more detail using binoculars or a telescope.

The star is so intriguing that the Hubble Space Telescope periodically turns its powerful gaze on Betelgeuse to see what scientists can learn. One particularly intriguing observation found a massive hotspot, the cause of which is still unknown, according to the European Space Agency

During its current dimming spree, you can track Betelgeuse's activity and submit your observations to the American Association of Variable Star Observers to help the group gather more information on its variability. More details on how to participate are here.

Follow Elizabeth Howell on Twitter @howellspace. Follow us on Twitter @Spacedotcom and on Facebook.  

All About Space Holiday 2019

Need more space? Subscribe to our sister title "All About Space" Magazine for the latest amazing news from the final frontier! (Image credit: All About Space)

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at:

Elizabeth Howell

Elizabeth Howell is a contributing writer for who is one of the few Canadian journalists to report regularly on space exploration. She is the author or co-author of several books on space exploration. Elizabeth holds a Ph.D. from the University of North Dakota in Space Studies, and an M.Sc. from the same department. She also holds a bachelor of journalism degree from Carleton University in Canada, where she began her space-writing career in 2004. Besides writing, Elizabeth teaches communications at the university and community college level, and for government training schools. To see her latest projects, follow Elizabeth on Twitter at @howellspace.