What object is the center of our solar system? The Sun! Eight planets orbit this giant, burning ball of gas. Life on Earth could not exist without the Sun. It gives us light and heat and… More →
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What's the largest, fastest-spinning planet in our solar system? Jupiter! It's so large that more than 1,000 Earths could fit inside it! This giant planet has more moons than any other planet More →
What planet do we call home? Earth! Earth has plenty of water--in fact, more than 70 percent of its surface is made up of water. Earth also has an atmosphere that contains oxygen and other… More →
What has one head, sometimes has tails, and orbits the Sun? A comet! These giant balls of ice, mixed with rock and dust, orbit the Sun. When they are very far from it, they have no tails.… More →
Which planet is often called the "red planet"? Mars! It got this nickname because it's covered with red rocks and dust. Mars is also known for having the largest mountain in the solar system. More →
What's the closest planet to our Sun? Mercury! Mercury orbits the Sun very quickly --in fact, it circles the Sun four times more quickly than Earth. With a surface covered in craters, it's… More →
What's the windiest planet in the solar system? Neptune! The winds on Neptune can be up to ten times stronger than the most powerful hurricanes on Earth! That isn't the only thing that's… More →
What shines brighter than any other object in the night sky? The Moon! It reflects the Sun's light as it orbits Earth. The gray, rocky Moon is close enough for people to travel there in… More →
What is the most famous dwarf planet in the solar system? Pluto! This dwarf planet is just like a regular planet, but smaller. Pluto is so far from the Sun that it's covered in ice. Its… More →
What planet has at least 12 rings and 53 moons? Saturn! The planet's bright rings are made of pieces of rocks and ice. Some pieces are as big as a house. Scientists have sent spacecraft to… More →
What's the coldest planet in the solar system? Uranus! Because it's so far away from the Sun, its temperature dips to about -357°F. Unlike Earth, this super-cold planet isn't made up of rock. More →
What planet is known as Earth's twin? Venus! The two planets are about the same size, and Venus also has mountains, canyons, and volcanoes. However, Venus is much hotter than Earth--with… More →