Amazing Science
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Amazing Science

Betelgeuse observed with the Atacama Large Millimeter/submillimeter Array (ALMA). In the millimeter continuum the star is around 1400 times larger than our Sun. The overlaid annotation shows how large the star is compared to the Solar System [ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella]

All About Betelgeuse. How Big Is It?

Thanks to interferometric observations made since 1920, we know the angular diameter of Betelgeuse with high precision. However, our knowledge of the linear diameter is less precise because our knowledge of Betelgeuse’s distance is uncertain. The most accurate…

Astronomy, Cosmology, Astrobiology, Space Exploration, Science Fiction, Technology

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Michele Diodati

Michele Diodati

Science writer with a lifelong passion for astronomy and comparisons between different scales of magnitude.

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