Black holes are massive cosmic objects created when large stars collapse in on themselves. They have immense gravity that sucks in everything around them, even light. While invisible, scientists believe black holes exist at the center of most galaxies based on their gravitational effects. They were first proposed by Einstein's theory of general relativity in 1915 as points in spacetime where gravity becomes infinite.

1. {
Black Hole

2. Black hole is massive hole that sucks
everything in.
Black holes go against basic physics.
They are created by explosion of a star.
When star explodes there are gases
and clouds around the explosion area.
Then those gasses and clouds are
pulled together and collapsed. At last
black hole is formed.
Description

3.  John Archibald Wheeler was the person who
came up with a term Black Hole in 1960’s
Name

4.  Discovery of a Black Hole was in 1915 by Einstein.
Discovery

5.  Black holes go against basic physics.
 Nobody has ever seen one.
 They are created after star explodes.
 Black hole can not be made from explosion of our Sun.
 There is a black hole in middle of every galaxy.
 Einstein was first person to discover black hole.
Fun Facts

6. Black Hole label
Black Hole
Jet
impact
point
Black
Holes
event
horizon
If anything gets in event
horizon, it will not come out,
it will be too late.

7.  There is massive Black Hole in
middle of universe.
 Black Hole’s slow down time.
 Some Black Holes are spinning and
have several event horizons.
 Nearest Black Hole is 1,600 light
years away from earth.
Facts about Black Hole