95+ Astronomy Trivia Questions

How many of these Astronomy Trivia quiz questions can you answer?

Quiz Questions

What is Mercury's period of revolution around the sun?
88 Earth Days
Show answer
Which constellation represents a hunter with weapons?
Orion
Show answer
What is the constellation known as the Ram also called?
Aries
Show answer
What star is labeled Alpha Ursa Minoris?
Polaris
Show answer
Which branch of science did young Carl Sagan tell his grandfather he wanted to practice?
Astronomy
Show answer
Who is credited with creating the "Big Bang Theory"?
Georges Lemaitre
Show answer
What astrological sign starts on January 21st?
Aquarius
Show answer
The Astronomical Unit (AU) is a unit of measurement based on the average distance between what two bodies?
The Earth And The Sun
Show answer
Which is the planet with the greatest average density?
Earth
Show answer
How many days in a Mercurian year?
88 Days
Show answer
What was the name of the first manned space vehicle?
Vostok 1
Show answer
The Horsehead Nebula can be found in what constellation?
Orion
Show answer
What is the sun mostly made up of?
Hydrogen
Show answer
How long does it take Mars to rotate on its axis?
24 Hr 37 Min
Show answer
Who was the first person in space?
Yuri Gagarin
Show answer
By what name is a quasi-stellar radio source better known?
Quasar
Show answer
The path traveled by a body in space is known as what?
Orbit
Show answer
How many days was Skylab III in space?
84
Show answer
What is the name for the boundary around a black hole, beyond which events cannot affect the observer?
Event Horizon
Show answer
Which astronomical body is 3.67 billion miles from the sun?
Pluto
Show answer
What is the study of stars, planets and galaxies called?
Astronomy
Show answer
What was the element mercury named after?
The Roman Messenger God
Show answer
How many stars make up Orion's Belt?
Three
Show answer
Who first proposed the heliocentric model of the solar system?
Aristarcus
Show answer

Astronomy Trivia

Did you know why the sun and the moon appear to be the same size in the sky even though the sun is 400 times larger than the moon? It turns out it’s all to do with perspective as the moon is 400 times further away from Earth. Cool, huh? Learn more about this scientific subject, including famous astronauts, constellations, star signs, planets, and terminology, in these astronomy trivia questions and answers.

A-Z