The Universe
Stars
Inner Solar System
Outer Solar System
Challenge Mode
100

The name of the force that keeps moons, planets, and stars in orbit.

Gravity

100

The remaining core of a massive star that has collapsed into itself, with gravity so strong that no light can escape.

Black Hole

100

This planet has the most extreme range of temperatures (from hot to cold) in the solar system.

Mercury

100

The name of the largest planet in the solar system.

Jupiter

100

The planet with the most moons in the solar system.

Saturn

200

A unit of measurement based on how far light can travel in one year.

What is lightspeed?

200

The birthplace of stars at the beginning of a star's life cycle.

Stellar Nebula

200

This planet is roughly the same size as Earth.

Venus

200

The planets in the outer solar system are primarily composed of (made of) this.

Gas.

200

This current mission will explore one of Jupiter's icy moons to discern if there is life.

Europa Clipper

300

The name of the galaxy we live in.

Milky Way.

300

The remaining core of a dead star that is as small as a moon and has a high density.

Dwarf Star

300

The number of moons shared by the planets in the inner solar system (Mercury, Venus, Earth, Mars).

Three moons.

300

The planets with a system of rings.

Jupiter, Saturn, Uranus, and Neptune

OR

All the outer planets

300

This space telescope captures images of the universe using infrared light instead of visible light.

James Webb Space Telescope

400

The name of the closest galaxy to ours.

Andromeda Galaxy

400

The name of an average star near the beginning of its life span.

Main Sequence Star
400

This planet has an atmosphere made primarily of nitrogen.

Earth.

400

The name of the asteroid belt where Pluto is located.

The Kuiper Belt.

400

The first two humans to set foot the moon.

Neil Armstrong and Buzz Aldrin

M
e
n
u