Why do gravitational waves come from merging black holes and neutron stars?
Quick Answer
When very massive objects accelerate violently, they disturb spacetime and send out ripples called gravitational waves. The strongest signals come from compact objects spiraling together and colliding.
The Full Story
Gravitational waves were predicted by Albert Einstein in 1916 as a consequence of general relativity. They are produced when extremely massive objects move in ways that create changing quadrupoles in spacetime, especially during mergers. LIGO detected the first direct signal, GW150914, in September 2015 from two merging black holes. In 2017, the merger of two neutron stars was observed both in gravitational waves and light, a landmark multi-messenger event.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Why does spacetime ring like a bell?"
Was this answer helpful?
Tap a reaction — it helps us pick what to cover next.