Black hole is the spot in the outer space that is characterised by a very strong gravitational acceleration. The gravitational acceleration is so strong that even the minutes particle can not escape from this region. Among other laws, the relativity principle explain this phenomenon. Interestingly, the black hole reflects no light. How much do you know about it?
Event horizon
Black hole
Event spot
Dark spot
12th century
16tyh century
19th century
18th century
It absorbs light
It reflects light
It blocks the path oflight from the sun
It is opaque
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1823
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Paul Graham
John Brass
Erwin Mars
Karl Schwarzchild
Eric Walter
Clark Peterson
Timmy Jaecke
David Finkelstein
1928
1955
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1671
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1967
Jocelyn Burnell
Wick Yellow
Thomas Erikson
Billy Weiss
10 April 2019
23 April 2016
11 March 2009
11 June 2007