A Black Hole the size of a penny

If you have a regular black hole that is three times the Sun’s mass you will have an event horizon radius of about 9 km. That means it has a huge density, about two quadrillion grams per cubic cm.  So a penny-sized mass of this stuff would pull everything around it with a tremendous force of gravity, enough to suck the entire earth into it.

Leave a Reply

Your email address will not be published. Required fields are marked *