For the first time, scientists have the calculations and simulations to explain mysterious flashes from the galaxy OJ 287.

Centuries before anyone pointed a telescope at the sky, Isaac Newton figured out how gravity works. He showed that any object ...

An unexpected monster black hole was found hiding inside one of the Milky Way's tiniest neighbors, rewriting what scientists ...

One of the Milky Way’s smallest galactic neighbours seems to have a supermassive black hole at its centre, upending ...

Theoretical physicist Alex Lupsasca is pushing for a space telescope to glimpse the thin ring of light that is thought to surround every black hole.

Earth would be torn apart if a black hole approached, losing its atmosphere and oceans, with debris forming an accretion disc ...