Best Ever Q&A
Space
Solar System
The Planets
Moon
Exploring the Heavens
Space Travel
Our World
Nature
History
Science & Technology
Back Home
What is a black hole?
Sometimes - no one knows why - stars collapse in on themselves. This increases their gravity (a force that pulls everything inward). Nothing escapes - not even light. These very dense bodies are called black holes.
Related Image
 
Previous:
Back
Book:
Best Ever Q&A
Section:
Space
Chapter:
Mysterious Universe