Space Facts for Kids
Planets, stars, exploration and the wider universe. Explore clear, child-friendly facts and country guides on Kids Radar.
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Latest space facts
Speedy Star Orbits the Milky Way’s Black Hole
Star S301 races around Sagittarius A* at up to about 25,000 km/s.
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Our Solar System’s Journey Through the Milky Way
The Solar System travels through the Milky Way together inside a huge, invisible bubble called the heliosphere.
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Toyohiro Akiyama’s Tough Trip to Space
Toyohiro Akiyama, the first Japanese person in space, had a very difficult time with space sickness aboard Mir in 1990.
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GJ 523b: A Strange Mega-Earth
GJ 523b is about 23.5 times as massive as Earth, yet only 2.5 times wider in radius.
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A Tiny Patch of Sky Full of Galaxies
Hubble looked at a tiny, seemingly empty patch of sky and found thousands of distant galaxies.
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Ancient Meteorite Grains Saved a Magnetic Clue
Tiny grains from an ancient meteorite preserved clues about a powerful magnetic field from the Solar System’s earliest days.
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Pluto’s Very Long Year
Since Pluto was discovered in 1930, it has not yet completed one full trip around the Sun.
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Curiosity Finds Mysterious Dips on Mars
Curiosity spotted tiny, shallow dips in rocks in Mars’s Gale Crater—features unlike any it had seen during its 14-year mission.
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Mercury Is Slowly Shrinking
Mercury may have become about 38 kilometers narrower since it formed as its cooling interior slowly contracts.
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Curiosity Finds the Lebanon Meteorite on Mars
NASA’s Curiosity rover found a 2-meter iron meteorite on Mars called Lebanon.
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Venus May Once Have Had a Moon
Simulations suggest Venus may once have had a moon that eventually fell back toward the planet.
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A Volcanic Eruption Seen From Space
A volcanic eruption seen from space.
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