Planet Facts
How Planets Were Named
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Space Exploration Facts
Star Facts
100

Which planet is the hottest planet in the solar system?

Venus

100

Which Roman/Greek goddess was the planet Venus named after?

Venus/Aphrodite

100

What is the fastest planet in our solar system?

Mercury

100

Can you hear in space?

No

100

What color is the Sun?

White

200

What form does water exist in Venus?

Ice

200

What is the Greek version of the Roman god that the planet Neptune named after?

Poseidon

200

What color is a sunset in Mars?

Blue

200

What is the name of the first dog who went to the moon and came back?

Laika

200

What are shooting stars?

Meteoroids (space rocks)

300

How many Mercuries would fit in Earth?

18

300

What is the Greek version of the Roman goddess that the planet Jupiter named after?

Zeus

300

What planet in our solar system is less dense than water?

Saturn

300

What year did the first person to go to space go to space?

1961

300

What are stars mostly made of? (Two elements)

Hydrogen and Helium

400

How many years in Earth is one year in Uranus?

84 years

400

What is the Greek version of the Roman god that the planet Mars named after?

Ares

400

How many Earth days is a Venus day?

243 days

400

What were the first animals to orbit the moon and return to Earth?

Russian Tortoises

400

Why is the sky blue?

Because the bluish light from the Sun scatters in the sky before they reach the Earth's surface. (The yellow and red light reaches the Earth's surface which is why the Sun looks yellow or red.)

500

What is the average temperature in Neptune? (Answer in Celsius)

-200 degrees Celsius

500

Which planet is the only planet that was not named after a Roman god or goddess?

Earth

500

How many kilometers per hour does wind travel in Neptune?

2575 kilometers per hour

500

How many minutes does it take to put a spacesuit on?

45 minutes

500

What is the closest star to Earth?

Proxima Centauri