Space Facts for Kids
Out-of-this-world facts about the universe
Scientists have confirmed the existence of more than 5,000 planets outside our solar system, called exoplanets. Some orbit two suns like Tatooine from Star Wars! Scientists believe there could be billions of exoplanets in our galaxy alone.
After a star like our Sun dies and becomes a white dwarf, it slowly cools over trillions of years. Eventually it would become a dark, cold object called a black dwarf. However, the universe isn't old enough yet — no black dwarfs exist yet!
Most planets in our solar system are named after ancient Roman gods. Jupiter is named after the king of the gods, Mars after the god of war, and Venus after the goddess of love and beauty. Earth is the only planet not named after a Roman deity.
The International Space Station (ISS) is about the size of an American football field including its solar panels. It has been continuously inhabited by astronauts since November 2000, making it the longest continuously occupied human outpost in space.
Solar flares are powerful bursts of radiation from the Sun that can disrupt radio communications, GPS systems, and even power grids on Earth. The most powerful solar flare ever recorded happened in 1859 and caused telegraph machines to catch fire.
Neptune has the strongest winds of any planet in our solar system, with gusts reaching over 1,200 miles per hour (2,000 km/h). Despite being the farthest planet from the Sun, Neptune generates significant internal heat that drives these ferocious storms.
The first animal to orbit Earth was a dog named Laika, launched by the Soviet Union aboard Sputnik 2 in November 1957. Laika showed that living beings could survive the conditions of spaceflight, paving the way for human space travel.
Scientists have confirmed that there is water ice on the Moon, especially in permanently shadowed craters near the poles that never get sunlight. This discovery is exciting because future Moon bases could use this ice for drinking water and even rocket fuel.
Shooting stars aren't actually stars at all — they are tiny pieces of rock or dust called meteoroids that burn up as they zoom through Earth's atmosphere. Most are no bigger than a grain of sand, but they glow so brightly because they travel so fast.
If you fell into a black hole feet first, the gravity would be so much stronger at your feet than at your head that you would be stretched out like a piece of spaghetti! Scientists actually call this process 'spaghettification.'