Black holes are regions in space where gravity is so strong that nothing, not even light, can escape.
They are invisible directly, but their presence is detected by how they affect nearby stars and gas.
How Black Holes Form
Most black holes form from the collapse of massive stars after they run out of fuel.
When a star collapses, its core becomes extremely dense, and gravity becomes extremely strong.
Some black holes can also form from collisions of neutron stars or from dense regions in the early universe.
Parts of a Black Hole
- Event Horizon: the boundary beyond which nothing can escape
- Singularity: the central point of infinite density
Why Black Holes Matter
Black holes help scientists understand:
- Gravity at extreme levels
- The behavior of space and time
- Galaxy formation and evolution
Famous Black Holes
The supermassive black hole at the center of our galaxy, the Milky Way, is called Sagittarius A*.
It contains about four million times the mass of our Sun.
Summary
Black holes are not just science fiction—they are real cosmic objects that challenge our understanding of physics.
Studying them reveals the limits of our knowledge and the mysteries of the universe.