Planets
Solar System
Space Explorers
Fun Facts
100

 What is the planet closest to the sun?

Mercury

100

How many stars are there in our solar system?

1

The Sun


100

What is the name for scientists who focus on observations of the skies?

Astronomers

100

 About how often does a lunar eclipse occur?

Twice a year
200

Which planet is sometimes called The Red Planet?

Mars

200

 What do you call a group of stars that forms a picture?

A Constellation

200

What tool helps scientists see faraway stars and galaxies?

A telescope

200

 I am not really a planet at all, although I used to be one.


Pluto

300

What planet is the densest in our solar system, and also has only one satellite?

Earth


300

What is the name for planets made mostly of gas?

Gas Giants

300

 What is the name of the first American woman in space?

Sally Ride

300

Who was the first person to walk on the moon?

Neil Armstrong

400

 What are Saturn's rings mostly made of?

Ice, Rock and Dust

400

What are stars born inside?

Nebulas

400

What is the name of NASA’s famous space telescope?

Hubble Space Telescope

400

Orion is one of the most easily recognized constellations. What was it named after?

a hunter from a greek myth

500

What planet has a moon called Triton?

Neptune
500

: How long does it take Earth to orbit the Sun once?

365 days/ 1 year

500

What do astronauts live in while they are in space for a long time?

The International Space Station (ISS)

500

 About how old is the Sun?

4.5 Billion year olds