The Solar System

Front

What is the Solar System?

Back

The Solar System is a collection of celestial bodies, including the Sun, planets, moons, asteroids, comets, and meteoroids, that are bound by gravity.

Front

What are gas giants?

Back

Gas giants are large planets that are primarily composed of hydrogen and helium. They have thick atmospheres and lack a solid surface. Examples include Jupiter and Saturn.

Front

Which planet is NOT a gas giant?

Back

Venus is NOT considered a gas giant; it is a terrestrial planet.

Front

What is the largest planet in our Solar System?

Back

Jupiter is the largest planet in our Solar System.

Front

Which planet is closest to the Sun?

Back

Mercury is the closest planet to the Sun.

Front

What is the Kuiper Belt?

Back

The Kuiper Belt is a region of the Solar System beyond Neptune, populated with small icy bodies, including dwarf planets like Pluto.

Front

How many planets are in the Solar System?

Back

There are eight recognized planets in the Solar System: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

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.

Front

How many galaxies are estimated to be in the universe?

Back

Over 1 billion galaxies are estimated to exist in the universe.

Front

What is the difference between a terrestrial planet and a gas giant?

Back

Terrestrial planets are rocky and have solid surfaces (e.g., Earth, Mars), while gas giants are mostly gaseous with thick atmospheres and no solid surface (e.g., Jupiter, Saturn).