Incorrect
Explanation
Stephen Hawking developed his theories of black holes and the boundary-condition of the universe at this period with his theory called Hawking radiation.
Solve this puzzle
There are 3 houses. The green house is in front of the brown house. The brown house is in the back of the green house. Where is the white house?
In Washington D.C. In front of the black house In front of the brown house In front of the green house