AI Insight
A Sun-like star has been detected traveling at hypervelocity speed after being catapulted from the center of the Milky Way galaxy. The ejection is attributed to a gravitational interaction with Sagittarius A*, the supermassive black hole residing at the galactic center. This phenomenon, known as the Hills mechanism, occurs when a binary star system is disrupted by the black hole, sending one star on an extreme trajectory outward through the galaxy.
Why it matters
Hypervelocity stars serve as rare natural probes of the gravitational environment near supermassive black holes and the structure of the Milky Way. Understanding their origin and frequency may provide insights into stellar dynamics at galactic centers and the history of our own galaxy's core activity.
Nature, Published online: 21 May 2026; doi:10.1038/d41586-026-01591-9
The black hole at the Milky Way’s centre catapulted a Sun-like star to ‘hypervelocity’ speed.