How well do you know your planets?

Can you tell the difference between Mercury and Mars? Which planet is the one with the rings? How about the one farthest from the sun? Test your solar system prowess here!

Question 1 of 16

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Which planet is best known for its surrounding ring, made up of mostly ice, rock and dust?

It takes Saturn around 29.5 Earth years to make one swing around the sun.

Question 2 of 16

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Name the planet in this photo:

Venus has a thick atmosphere consisting of more than 96 percent carbon dioxide.

Question 3 of 16

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This planet is often called the Red Planet and is home to Olympus Mons, the second tallest known mountain within our solar system:

Mars appears red because of the high concentration of iron oxide found on its surface.

Question 4 of 16

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Name the planet in this photo:

Jupiter is the third-brightest object in the sky, behind the moon and Venus, and can project enough light to cast a shadow on Earth.

Question 5 of 16

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Sam Howzit/flickr
This planet was named after the Roman goddess of love and beauty and has been called Earth’s sister planet.

Venus is the closest planet, in terms of size and gravity, to Earth.

Question 6 of 16

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Name the planet in this photo:

Mars has two small, irregularly shaped moons, Phobos and Deimos.

Question 7 of 16

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Which planet was named after the Roman god of the sea and is the farthest planet from the sun?

Neptune was visited by the Voyager 2 space probe in 1989, 12 years after the probe was launched by NASA.

Question 8 of 16

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Name the planet in the photo:

Saturn has 62 known moons, and one them is large enough to have its own atmosphere — the only one of its type in the solar system.

Question 9 of 16

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Vit Hassan/flickr
This planet, the closest to the sun, is also the smallest, with the mass of 0.55 Earths.

Mercury is the closest planet to the sun and completes its yearly orbit in just 88 Earth days.

Question 10 of 16

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Name the planet in this photo:

Neptune was the first planet to be discovered by mathematical prediction rather than by direct observation. Astronomer Alexis Bouvard noticed a discrepancy in Uranus’s orbit that was soon explained by the presence of Neptune.

Question 11 of 16

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Name the planet in this photo:

Mercury is the quickest planet, taking only 116 Earth days to make its way around the sun.

Question 12 of 16

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Which planet is considered an 'ice giant' and is the only planet in our solar system using the Greek god's name instead of the Roman name?

Uranus lies a little less than 3 billion miles from the sun and rotates along a parallel axis (imagine if the North Pole pointed towards the sun with the same daily rotation). This means that each of Uranus’s poles experience days and nights lasting 42 Earth years.

Question 13 of 16

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Name the planet shown in the photo:

Around 71 percent of Earth’s surface is covered in water. It’s the only planet in the solar system to have any measurable amount of water currently.

Question 14 of 16

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Golden observatory, Wikimedia Commons
This gas giant is the largest planet in the solar system and has a massive storm spinning around its face.

Jupiter is known for its iconic Great Red Spot, a massive storm that is more than 20 miles across.

Question 15 of 16

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Name the planet in the photo:

Uranus is the seventh planet from the sun but has the coldest atmosphere with temperatures well below minus 350 degrees Fahrenheit.

Question 16 of 16

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This planet is thought to be around 4.5 billion years old and has a solid iron inner core. Its atmosphere is composed of about 78% nitrogen.

If you hopped in a time machine and went back just 250 million years, you’d find Pangea, the super continent from which all contemporary continents calved.

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