- Astronomers have observed the brightest flash of light ever seen, from an event that occurred 2.4 billion light years from Earth and was likely triggered by the formation of a black hole.
- The burst of gamma-rays — the most intense form of electromagnetic radiation — was first detected by orbiting telescopes on October 9, and its afterglow is still being watched by scientists across the world.
- Astrophysicist Brendan O’Connor told AFP that gamma-ray bursts that last hundreds of seconds, as occurred on Sunday, are thought to be caused by dying massive stars, greater than 30 times bigger than our Sun.