Outer Space

Observations of the star Betelgeuse taken by the ESO’s Very Large Telescope in January and December 2019, which show the star’s substantial dimming. (Image: ESO / M. Montargès et al.)

Dimming Betelgeuse Likely Isn’t Cold, Just Dusty

Late last year, news broke that the star Betelgeuse was fading significantly, ultimately dropping to around 40 percent of its usual brightness. The activity fueled popular speculation that the red supergiant would soon explode as a massive supernova. But astronomers have…

Betelgeuse has been a beacon in the night sky for stellar observers, but it began to dim late last year. At the time of writing, Betelgeuse is at about 36 percent of its normal brightness, a change noticeable even to the naked eye. (Image: ESO)

ESO Telescope Sees Surface of Dim Betelgeuse

Using ESO’s Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The stunning new images of the star’s surface show not only the fading red supergiant, but also…

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Dimming Betelgeuse Likely Isn’t Cold, Just Dusty

Late last year, news broke that the star Betelgeuse was fading significantly, ultimately dropping to around 40 percent of its usual brightness. The activity fueled popular speculation that the red supergiant…

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ESO Telescope Sees Surface of Dim Betelgeuse

Using ESO’s Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The stunning new images of the star’s…

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Ghosts of Ancient Explosions Live on in Stars Today

When small, dense stars called white dwarfs explode, they produce bright, short-lived flares called Type Ia supernovae. These supernovae are informative cosmological markers for astronomers — for example, they were…