Planets
Astronauts
Space Vocabulary
Binary star system
Science Facts
100

Which planet is called the Red Planet?

Mars

100

Who was the first person to walk on the Moon?

Neil Armstrong

100

What do we call a person who travels to space?

Astronaut

100

What was the name of the first satellite launched into space (1957)?

Sputnik 1

100

What force keeps planets in orbit around the Sun?

Gravity

200

Which planet is the largest in the Solar System?

Jupiter

200

Who was the first human in space?

Yuri Gagarin

200

What is the term for a small natural body that orbits a planet?

Moon / Satellite

200

Which mission first landed humans on the Moon (1969)?

Apollo 11

200

What is the closest star to Earth?

The Sun

300

Which planet is known for its rings?

Saturn

300

Who was the first woman in space?

Valentina Tereshkova

300

What is the term for the path an object takes around a star or planet?

Orbit

300

What is the name of the long-term space station launched in 1998?

International Space Station (ISS)

300

What galaxy do we live in?

The Milky Way

400

Which is the hottest planet in the Solar System?

Venus

400

Which American astronaut stayed on the ISS for nearly one year?

Scott Kelly

400

What is the explosion of a dying star called?

Supernova

400

Which spacecraft was the first to leave the Solar System?

Voyager 1

400

What is the name of the black hole at the center of the Milky Way?

Sagittarius A*

500

Which planet rotates on its side?

Uranus

500

Who commanded Apollo 13, the mission known as a “successful failure”?

Jim Lovell

500

What is a star system with two stars called?

Binary star system

500

Which Mars rover successfully landed in 2012 and explored the planet?

Curiosity

500

What is the speed of light (in km/s)?

About 300,000 km/s