Black hole triggers a new type of supernova 700 million light-years away
Why in the news
Astronomers reported a new kind of stellar explosion, a supernova set off by a black hole orbiting a massive star, at a distance of about 700 million light-years.
Key facts
- Distance: about 700 million light-years.
- Cause: a black hole in a binary system pulled material from its massive companion until the star exploded.
- Masses: the star and the black hole were each about 10 times the mass of the Sun.
- Detection: AI algorithms searching for unusual explosions in real time, followed by observations from ground and space telescopes.
- It is the first observed supernova triggered by a black hole.
About the event
Over years, the black hole’s gravity distorted the star and stripped away its hydrogen layer, exposing the helium core. The explosion released more energy in a single second than the Sun will emit over its whole life. Afterwards the black hole swallowed leftover stellar debris, growing in mass and power. The AI-driven detection allowed astronomers to capture both the lead-up and aftermath of the blast. The finding shows that black hole companions can directly trigger supernovae and improves understanding of massive star evolution in binary systems.
Exam angle
- Note the first-of-its-kind tag: a black-hole-triggered supernova.
- A supernova is the explosive death of a massive star.
- The role of AI in astronomy is a recurring science and technology theme.