Artistic impression of a red supergiant star surrounded by a veil of circumstellar material before explosion. Image: NAOJ
Bright light emitted by dying stars - space science news

Astronomers found that supernovae generated from red supergiants (big, old stars) flash a bright light before the main explosion. This flash of light is caused by the collision of the expanding gas of the supernova and unidentified material surrounding the dying star. This discovery was made possible by new algorithms for big data analysis techniques of real-time observations with the Victor Blanco Telescope in Chili. The occurrence of the bright light flash was not predicted by current conceptual models, and therefore sheds new light on supernovae explosions.

Read the full story: Cerro Tololo Inter-American Observatory
Scientific publication: Nature Astronomy