The Solar System
Stars & Galaxies
The Moon & Earth
Space Exploration
Cosmic Challenges
100

What is the largest planet in our solar system?

Jupiter

100

What is the closest star to Earth?

The Sun

100

What causes day and night on Earth?

Earth's rotation

100

What was the first artificial satellite sent into space?

Sputnik 1

100

What force keeps planets in orbit around the Sun?

Gravity

200

Which planet is known as the Red Planet?

Mars

200

What galaxy do we live in?

The Milky Way

200

What is Earth's natural satellite?

The Moon

200

What famous space telescope launched in 1990?

The Hubble Space Telescope

200

What is the study of the universe as a whole called?

Cosmology

300

Which planet has the most prominent ring system?

Saturn

300

What is a group of stars forming a recognizable pattern called?

A constellation

300

What causes the Moon's phases?

The changing positions of the Sun, Earth, and Moon

300

Who was the first person to walk on the Moon?

Neil Armstrong

300

What is a streak of light caused by space debris entering Earth's atmosphere called?

A meteor

400

What is the name of our solar system’s star?

The Sun

400

What is the explosion of a massive star called?

A supernova

400

What happens when the Moon blocks the Sun?

A solar eclipse

400

What does ISS stand for?

International Space Station

400

What is the boundary around a black hole beyond which nothing can escape called?

The event horizon

500

Which planet rotates on its side?

Uranus

500

What is a region where gravity is so strong that light cannot escape?

A Black Hole

500

Approximately how long does Earth take to orbit the Sun?

365.25 days, or one year

500

Which planet did NASA's Perseverance rover land on?

Mars

500

What theory explains the early development and expansion of the universe?

The Big Bang theory

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