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Cornell University

Black Holes

January 17, 2025

Hi, thank you for your interest in black holes! I should preface by saying that I will use quotation marks around some concepts Relativity makes a lot of things behave...

January 17, 2025

This question is surprisingly complicated!  You may have heard something about the black hole's center, often called the singularity Mathematically, the density goes to...

June 28, 2024

First, a matter-antimatter collision is 100% efficient So even if you had a collision on the scale of a 10 million solar mass matter star combining with a 10 million solar mass...

June 28, 2024

Nothing spectacular (like time travel) happens when two black holes merge When two black holes merge, they just form a big black hole, that is all Of course, there ARE some...

June 28, 2024

This is a great question! There are two reasons why we never see matter fall into a black hole The first reason is because of gravitational time dilation; if we dropped a clock...