The Ultimate Astronomy Quiz
Though the astronomy field has evolved from its primitive beginnings, there's still a boundless cosmos to explore. Test your astronomy knowledge with our quiz.
How many constellations are officially recognized?
What term do astronomers use to describe the two times a year when day and night are of equal length?
- blue moon
What term describes the effect where stars appear to move as the Earth moves?
Which planet has the largest moon in the solar system?
The sun is a star.
Can a comet create a crater on the surface of the Earth?
- only during a full moon
What space objects can create craters on the surface of the Earth?
What does a light-year measure?
Which of the following best describes a supernova?
- a fast-moving meteor
- a pair of conjoined stars
- a bright explosion
Pluto is one of the nine planets.
Which of the following best describes our solar system?
Who discovered that the planets travel in an ellipse, rather than a circle?
- Edwin Hubble
- Isaac Newton
- Johannes Kepler
What is the name of the North Star?
The red spot on Jupiter is larger than the Earth.
What is the scientific term behind why the stars twinkle?
Saturn is the only planet with rings.
Which of the following planets is NOT considered one of the gas giants?
How much of the Milky Way is visible?
- less than 5 percent
- around 50 percent
- more than 90 percent
What is at the center of the Milky Way galaxy?
- a black hole
- the sun
- the planet Earth
What are the moons of Uranus named after?
- Roman and Greek gods
- characters from Shakespeare
- the people who discovered them
What is the name of the nearest galaxy to Earth?
How many stars are in the Milky Way?
- around a billion
- 100 billion
- more than 200 billion
On what planet will you find the largest volcano in the solar system?
Which planet has the most moons?
What are the rings around Saturn mostly made from?
How often does Halley's Comet come around?
- every 25 years
- every 75 years
- every 150 years
What is a nebula?
- a crashed comet
- a cloud of space dust
- a burned out star
Does the Earth rotate or revolve?
- rotate only
- revolve only
What term describes two full moons in the same calendar month?
- full moon
- blue moon
- double moon
NASA maintains a SETI division to search for life on other planets.