Solar System
Constellations
History
Outside the Solar System
Physics Behind Astronomical Objects
100

This is known as the red planet, and has shown evidence that it may have had microscopic life on it long ago.

What is Mars?

100

The ecliptic, the Sun's path, passes through this many constellations.  

What is 13?

100
These are human made objects which have been sent into orbit around Earth to relay communications, take pictures, and perform other tasks.
What are satellites?
100

This is the closest star from Earth

What is Proxima Centauri?

100

This is the force that keeps everything in our solar system together.

What is gravity?

200

The planet is the coldest planet in the solar system.

What is Uranus?

200

This constellation's brightest star is Vega and it is associated with the myth of the Greek musician Orpheus. 

What is Lyra?

200

In this model of the universe, Earth is believed to be the center of the universe and is stationary. 

What is Geocentric Model? 

200
This is a large rotating cloud of dust and hydrogen gas.
What is a nebula?
200

The phenomenon that explains why light from distance galaxies appear more red to us.

What is redshift

300

This moon is the largest moon of Neptune and it is famous for orbiting in the opposite direction of Neptune's rotation.

What is Triton?

300

There are this many official constellations.

What is 88?

300

This is the space craft has traveled the furthest distance from Earth.

What is Voyager 1?

300

This is the object at the center of our galaxy.

What is a Black Hole?

300
In this process, the nuclei of atoms fuse together to form a larger nucleus.
What is nuclear fusion?
400

This is the name of the Sun's magnetic field that extends far into space. 

What is Heliosphere?

400

This constellation is associated with the myth of Hercules killing a multiple-headed creature. 

What is Hydra?

400
These are the two rovers that are currently exploring and observing the surface of Mars.
What is Spirit and Opportunity?
400

These objects are powerful emitters of electromagnetic radiation and where originally confused for stars.

What are quasars?

400

This is the process that keeps neutron stars from collapsing into black holes.

What is neutron degeneracy pressure?

500

This moon of Uranus has a distinct feature called "The Great Dark Spot"

What is Umbriel?

500

This constellation is Albert Einstein's Zodiac sign.

Pisces

500
This is the lander craft that within the last decade brought two rovers to Mars to investigate.
What is The Phoenix?
500

This occurs when two neutron stars or a neutron star and a black hole merge.

What is a Kilonova?

500

This is the theoretical force that causes the accelerating expansion of the universe.

What is Dark Energy?