Stars & Galaxies
The Inner Planets
The Outer Planets
Earth's Movements
Space Showcase
100

The name of the specific spiral galaxy that contains our solar system.

What is the Milky Way?

100

The position of Earth in order from the Sun.

What is the third planet?

100

The primary state of matter that makes up the composition of the outer planets.

What is gas?

100

The spinning of Earth on its imaginary axis.

What is rotation?

100

The natural satellite that revolves around Earth approximately once every 28 days.

What is the Moon?

200

A massive, collection of gas, dust, and billions of stars held together by gravity.

What is a galaxy?

200

The shared structural composition of all four inner planets.

What is rocky or solid?

200

The largest planet in our solar system, famous for its Great Red Spot.

What is Jupiter?

200

The movement of Earth traveling in a complete path around the Sun.

What is a revolution (or orbit)?

200

The classification of the Sun based on its size relative to all other stars in the universe.

What is a medium-sized star?

300

The main procedural difference between how stars and planets handle light.

What is stars emit (make) their own light, while planets only reflect light?

300

This planet is closest to the Sun and has almost no atmosphere, causing extreme temperature swings.

What is Mercury?

300

The distinct planetary feature most visibly pronounced around Saturn.

What are rings?

300

The planetary cycle caused directly by Earth's 24-hour rotation on its axis.

What is the day and night cycle?

300

A pattern or group of stars in the night sky that forms a recognizable picture or shape.

What is a constellation?

400

The primary reason why the Sun appears much larger and brighter to us than other stars in the universe.

What is because the Sun is the closest star to Earth?

400

Often called Earth's twin due to its size, this inner planet is the hottest because its thick atmosphere traps heat.

What is Venus?

400

The specific space boundary made of rock and ice chunks that separates the inner planets from the outer planets.

What is the Asteroid Belt?

400

The amount of time it takes for Earth to complete one full revolution around the Sun.

What is 365 ΒΌ days (or 1 year)?

400

The reason we see different constellations at different times of the year.

What is because Earth orbits the Sun, changing our view of deep space at night?

500

The underlying stellar property that determines whether a star looks white, blue, yellow, or red.

What is its surface temperature?

500

This inner planet is nicknamed the "Red Planet" due to iron oxide (rust) on its surface.

What is Mars?

500

This outer planet looks blue due to methane gas and rotates completely on its side.

What is Uranus?

500

The two combined factors that cause Earth to experience changing seasons throughout the year.

What are the tilt of Earth's axis and its revolution around the sun?

500

The classification Pluto received in 2006 when it was determined it does not clear its own orbital path.

What is a dwarf planet?