Exploring Space

Front

What is space?

Back

Space is a big, empty place that surrounds Earth, where stars, planets, and moons exist, and astronauts explore.

Front

What is the universe?

Back

The universe is everything that exists, including all of space, filled with billions of galaxies, stars, and planets.

Front

What is a galaxy?

Back

A galaxy is a huge group of stars, gas, and dust held together by gravity, like a giant city of stars.

Front

What is the Milky Way?

Back

The Milky Way is a huge spiral galaxy that looks like a giant pinwheel, containing our solar system.

Front

What is a celestial object?

Back

A celestial object is anything in space, like a star, planet, moon, comet, or asteroid.

Front

What is a star?

Back

A star is a giant ball of hot gas that shines brightly, like our Sun.

Front

What is a planet?

Back

A planet is a large, round object that orbits a star and reflects its light, like Earth orbiting the Sun.

Front

What is the order of planets from the Sun?

Back

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Front

What is the Moon?

Back

The Moon is a big, round rock that orbits Earth, Earth's only natural satellite, with different phases.

Front

What is a comet?

Back

A comet is a big space rock composed of ice, dust, and rocky debris that orbits the Sun, forming a glowing coma when near the Sun.