How to Build a Black Hole in Your Backyard

A "black-hole star" formed as a result of the tidal disruption of a Sun-like star by a supermassive black hole of less than 100 million times the mass of the Sun, as illustrated in a 1997 paper. Without friction on an ambient medium, all objects fall the same way under the influence of gravity. This was demonstrated during the Apollo 15 mission in 1971, when astronaut David Scott dropped a 1.32-kg aluminum-alloy geological hammer and a 0.03-kg falcon feather simultaneously on the Moon.

AI-generated summary of the original article — see the source for the full story.