ESOcast SD

European Southern Observatory

ESOcast is a video podcast series dedicated to bringing you the latest news and research from ESO, the European Southern Observatory. Here we explore the Universe's ultimate frontier.

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ESOcast SD

Episodes (25)

Jul 28th Clearest image ever of Betelgeuse’s companion | ESO News
Jul 22nd New 'exomoon' detection challenges cosmic labels | ESO News
Jul 15th New exoplanet had been hiding for more than 10 years | ESO News

ESOcast SD

Jul 28, 2026
1¼ minutes
20 MB

Astronomers have finally obtained firm evidence that Betelgeuse, a famous star in the Orion constellation, is not alone. Using ESO’s Very Large Telescope (VLT) they have obtained the clearest image ever of what likely is Betelgeuse B, a star orbiting Betelgeuse and which could explain some of its brightness variations. This video summarises the discovery.

ESOcast SD

Clearest image ever of Betelgeuse’s companion | ESO News

European Southern Observatory

00:00 -01:22