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T R I v I A
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Four
Who established the system astronomers use to classify galaxies?
Edwin Hubble.
Hans Lippershey.
Galileo Galilei.
Who was the first astronaut to walk on the moon?
John Glenn.
Neil Armstrong.
Buzz Aldrin.
Name the first American astronaut to orbit the Earth?
Neil Armstrong.
Alan Shepard.
John Glenn.

Who developed the theory that the planets revolve around the sun?
Carl Sagen
Nicholas Copernicus.
Albert Einstein.
Who discovered the Law of Gravity showing that the movement of  stars and planets can be predicted?
Nicholas Copernicus.
Galileo Galilei.
Isaac Newton.

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