History
Properties
Evidence
Miscellaneous
100
Who invented the theory of relativity?
Albert Einstein
100
How many physical properties does a back hole have?
3: Mass, charge, and angular momentum
100
Are black holes entirely black?
No they emit small amounts of thermal radiation known as Hawking Radiation but we can't see it from Earth
100
What is the center of a black hole called?
The singularity. This is where the mass of the black hole is concentrated
200
When was the theory of relativity invented?
1915
200
What makes up most of the mass of a black hole?
Dark matter
200
How were black holes first discovered?
Scientists saw stars and other objects orbiting around nothing and at a closer look, they discovered a black hole
200
Will our sun ever become a black hole?
No it is not big enough
300
What is the theory of relativity?
e=mc^2
300
What is the event horizon?
Objects pass over it and fall into the black hole never to come out again
300
What happens to a star when it goes near a black hole
It orbits the black hole for a little while before falling into it and dying
300
How close is the nearest black hole?
1,600 light years away
400
When was the term "black hole" used officially?
1967
400
Is there anything bigger than a black hole?
Yes
400
Do black holes ever die
Yes they slowly evaporate over time
400
Can black holes grow?
Yes, they can expand by adding additional matter
500
When were black holes officially discovered?
1916
500
How do black holes form?
From a massive star explosion
500
Can anything other object have an "event horizon" where nothing can escape?
No
500
What is spaghettification
When objects enter a black hole, they are twisted and pulled apart before being added to the black hole's mass
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