![Hubblecast HD show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/030/795/small/hubblecast-hd.png)
Summary: For centuries, scientists imagined objects so heavy and dense that their gravity might be strong enough to pull anything in - including light. They would be, quite literally, a black hole in space.
Summary: For centuries, scientists imagined objects so heavy and dense that their gravity might be strong enough to pull anything in - including light. They would be, quite literally, a black hole in space.