The Solar System and the Universe Review

Front

What is the solar system?

Back

The solar system is a collection of planets, moons, comets, and asteroids that orbit around a star, which in our case is the Sun.

Front

What are the main differences between inner and outer planets?

Back

The outer planets are gas giants, while the inner planets are rocky and smaller.

Front

What is an irregular galaxy?

Back

An irregular galaxy is a type of galaxy that does not have a distinct regular shape, unlike spiral or elliptical galaxies.

Front

What is Earth's axis?

Back

Earth's axis is the imaginary line that goes through the Earth from the North Pole to the South Pole.

Front

What is an asteroid?

Back

An asteroid is a small rocky or metallic body in space that orbits the Sun, typically less than 1,000 km in diameter.

Front

What are the four inner planets?

Back

The four inner planets are Mercury, Venus, Earth, and Mars.

Front

What are the four outer planets?

Back

The four outer planets are Jupiter, Saturn, Uranus, and Neptune.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the Sun, displays a visible atmosphere or tail.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our solar system, characterized by its spiral shape.

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.