Solar System FAQ

4 FAQs about [Solar System FAQ]

How many planets are in our Solar System?

Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets. Our solar system is located in the Milky Way, a barred spiral galaxy with two major arms, and two minor arms.

Where is the Solar System located?

The solar system is located in the Milky Way''s Orion star cluster. Only 15% of stars in the galaxy host planetary systems, and one of those stars is our own sun. Revolving around the sun are eight planets. The planets are divided into two categories based on their composition, terrestrial and Jovian.

How long does it take a planet to orbit the Sun?

It takes 225 days to orbit the sun and is a similar size to Earth, having a radius of 6,052 km. Although not the closest planet to the Sun, it is the hottest in the solar system. The temperature at the surface is an incredible 467 °C, ( 872 °F). This is largely due to its thick toxic atmosphere of carbon dioxide which traps heat.

Which spacecraft will leave our Solar System?

NASA’s Voyager 1 and Voyager 2 are the only spacecraft leaving our solar system. Three other spacecraft – Pioneer 10, Pioneer 11, and New Horizons – will eventually hit interstellar space. Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets.

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