Planets
Stars
Humans in Space
Deep Space
Misc
100

This is the planet you're on right now

What is Earth?

100

This star is the closest to the Earth

What is the Sun?

100

This was the first human to orbit the Earth and come home safely

Who is Yuri Gagarin? 

100

This is the name for a large patch of gas and dust in space, often the birthplace of new stars.

What is a Nebula?

100

This is what happens when the Moon completely blocks the Sun from the perspective of an observer on Earth.

What is a total solar eclipse?

200

The largest planet in our solar system

What is Jupiter?

200

The brightest star in the night sky (as seen from Earth)

What is Sirius?

200

The first Canadian in space

Who is Marc Garneau?

200

These come in two varieties, both bound by mutual gravity of their stars, and can contain anywhere from 10's to 100,000's of stars.

What is an open or globular star cluster? 
200

You can wish upon one of these when you see them streak across the sky. Caused by a small piece of rock or metal entering the Earth's atmosphere from space.

What is a shooting star/meteor? 

300

This planet takes nearly 30 years to orbit the Sun once

What is Saturn?

300

Polaris is the scientific name of this star, which has been guiding humans for centuries.

What is the North Star?

300

This was the first human to set foot on the Moon

Who is Neil Armstrong?

300

These objects can contain billions to trillions of stars. Almost all of them have a supermassive black hole at their center. 

What is a Galaxy?

300

These solar system objects are sometimes equated to cats. They have tails and can behave unpredictably. 

What is a comet? 

400

The hottest planet in our solar system, and the brightest at night

What is Venus?

400

This star is expected to go supernova within the next 100,000 years. 

What is Betelgeuse? 

400
This Canadian was the first to go beyond low Earth orbit, and became one of the four humans to go further than any other in all of history

Jeremy Hansen

400

This galaxy is the nearest major galaxy to our milky way, and is visible with the unaided eye from dark sky areas. 

What is the Andromeda Galaxy?

400

The mirror on this space telescope was initially ground incorrectly. 

What is the Hubble Space Telescope? 

500

This planet orbits 4.5 billion kilometers from the Sun

What is Neptune?

500

Stars with a mass of more than 25 times our Sun will end their lives in a massive explosion, leaving behind this type of object.

What is a black hole?

500

This Canadian commanded the International Space Station in 2013

Who is Chris Hadfield?

500

This nebula is the closest star forming region to Earth, and is often called the "sword" of this winter time constellation,

What is the Orion Nebula?

500

This rocket carried Apollo astronauts to the Moon.

What is the Saturn V?