The largest known star is called UY Scuti, and it's over 1,700 times larger than our Sun.

The planet Saturn's density is so low that it would float in water if you could find a body of water big enough.

There are more stars in the universe than grains of sand on all the beaches on Earth.

The largest volcano in our solar system is Olympus Mons on Mars, which is three times taller than Mount Everest.

The Milky Way galaxy is estimated to be over 13.5 billion years old, almost as old as the universe itself.

There are more possible iterations of a game of chess than there are atoms in the observable universe.

The coldest known place in the universe is the Boomerang Nebula, where temperatures can drop to -272°C (-458°F).

The Great Red Spot on Jupiter is a storm that has been raging for over 300 years.

The term "astronaut" comes from the Greek words for "star" and "sailor."

The first satellite sent into space was Sputnik 1, launched by the Soviet Union in 1957.
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