Gravity and Motion
The Solar System
The Universe
Earth, Moon, and Sun
Nature of Science
100

Without this force weighing us down, we would not be playing this game right now.

What is Gravity?

100

Jupiter has a reputation for protecting the inner planets from asteroids because of its massive gravitational pull. You will never see evidence of this on its surface because of this reason.

What is Jupiter is made of gas?

100

Stars are formed by gravity, but that gravity continues to affect other objects in space. Stars and other objects pull together other stars, gas, and dust, organizing it all into...

What are Galaxies?

100

In South Florida, the coming of winter is always joyous to me. This wouldn't be possible if the Earth wasn't a little sideways.

What is Earth's Tilt?

100

The National Oceanic and Atmospheric Administration (NOAA) uses this orbital technology to track natural disasters like hurricanes and thunderstorms.

What are satellites?

200
Galileo Galilei was charged with heresy by the Catholic Church for his support for this now widely accepted model for the Solar System.

What is the Heliocentric Model?

200

Our Earth can only support life because it is at the "just right" distance from the Sun. In this zone, liquid water can consistently pool and support life.

What is the "Goldilocks" Zone?

200

Gravity doesn't just affect whole planets. Earth's oceans seem to follow just behind our moon, causing the sea level to rise on some parts of the Earth and fall on the others.

What are the Earth's Tides?

300

Without this force, we would have burned up in the Sun's heat long ago.

What is Momentum?

300

Pluto was reclassified in 2006 to this kind of space object largely due to its orbit that occasionally crosses into Neptune's orbit. 

What is a Dwarf Planet?

300

The H-R Diagram maps each star that exists in the universe based on temperature and luminosity. As stars are plotted on the diagram, a pattern is revealed about each type of star and where it is in its...

What is a Star's Life Cycle?

300

Many ancient civilizations considered it an ill omen. Nowadays, people stare at it in amazement, but they shouldn't do so without proper glasses since they are still staring at the Sun.

What is a Solar Eclipse?

400

DAILY DOUBLE!

Probes like the Voyager I and II have used this strategy to go even faster through the Solar System and conserve fuel.

400

This planet's year, or orbital period, is shorter than its day. It also spins backwards.

What is Venus?

400

You can't get a mean spiral off of it, but this old galaxy's shape makes you think you could.

What is an Elliptical Galaxy?

500

This astronomer was able to determine the organization of the Solar System with precise calculations, decades before the invention of the telescope.

Who is Nicolaus Copernicus?

500

The universe is getting BIGGER! All of the galaxies seem to be running away from Earth and they all seem to be more red than the galaxies closer to us. Why is that?

What is Red Shift?