The Moon
This is when the moon is entirely filled with light.
What is the full moon?
Space rocks must be smaller than this to be considered meteors.
What is 10 meters?
This is the largest planet of the solar system.
What is Jupiter?
This determines the day/night cycle of a planet.
What is rotation/spin period?
This planet has more moons than any other planet in the solar system.
What is Saturn?
When the light is on the left side of the moon, it is called this.
What is waning?
This area of the solar system is where you would expect to find asteroids.
What is the Asteroid Belt?
These are the two ice giants of the solar system.
What are Uranus and Neptune?
This can also be called a planet's orbital period.
What is revolution?
It rains this on Uranus and Neptune.
What is diamonds?
This planet has the largest moon in relation to its planet's size in the entire solar system.
What is Earth?
This is otherwise referred to as a "dirty snowball".
What is a comet?
This planet is sometimes called Earth's twin or Earth's sister.
What is Venus?
For Earth, this is third, and for Jupiter it is fifth.
What is position?
This planet has water locked underground at its polar caps, even though it has no water on its surface.
What is Mars?
This is how many days it takes for the moon to go through a full lunar cycle.
What is 29.5 days?
During the last mass extinction event, this struck the Earth and killed all the dinosaurs.
What is a comet or asteroid?
This planet's gravitational pull may be responsible for the solar system not having a ninth planet where the asteroid belt currently sits.
What is Jupiter?
For most planets in the solar system, this measure at less than 30 degrees.
What is tilt?
When the Earth casts a shadow on the moon, this celestial phenomenon occurs.
What is a lunar eclipse?
We only see one side of the moon because of this quality of the moon.
What is tidally locked?
These are the two places comets can be found in the solar system.
What is the Kuiper Belt and Oort Cloud?
This is the order of the planets in the solar system from smallest to largest.
What is Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter?
This is the area of a star system where liquid water can be found and, therefore, life is possible.
What is the habitable zone/Goldilocks zone?
Mars has almost none of this element anywhere on the planet, so if we terraformed it we'd have to import it from one of Saturn's moons or maybe Venus.
What is nitrogen?