Catalog

Facts

50 cards. A measured fact was checked. A theory is still being tested. A story is not a fact.

50 shown

• Measured factThe Sun is a star.Sun
• Measured factThe Sun sits in the middle of our solar system.Sun
• Measured factSunlight takes about eight minutes to reach Earth.Sun
• Measured factThe Sun is mostly hydrogen and helium.Sun
• Theory being testedThe Sun will slowly change as its fuel runs low.Sun
• Story people enjoyA chariot pulls the Sun across the sky.Sun
• Measured factThere are eight planets.Planets
• Measured factEarth orbits the Sun.Planets
• Measured factMercury is the closest planet to the Sun.Planets
• Measured factVenus is the hottest planet.Planets
• Measured factMars is red because its dust is rusty.Planets
• Measured factJupiter is the biggest planet.Planets
• Measured factSaturn has rings made of ice and rock.Planets
• Measured factUranus spins tipped on its side.Planets
• Measured factNeptune is the farthest planet from the Sun.Planets
• Measured factPlanets shine by bouncing sunlight.Planets
• Theory being testedSome planets around other stars may have liquid water.Planets
• Story people enjoyThe planets are gods walking across the sky.Planets
• Measured factThe Moon orbits Earth.Moons
• Measured factThe Moon does not make its own light.Moons
• Measured factMoon phases show how much of the Moon's day side we can see.Moons
• Measured factPeople walked on the Moon in 1969.Moons
• Measured factEarth has one moon.Moons
• Measured factJupiter has four big moons that Galileo watched move.Moons
• Measured factTitan, a moon of Saturn, has thick air.Moons
• Theory being testedSome icy moons may hide oceans under the ice.Moons
• Story people enjoyThe Moon is made of cheese.Moons
• Measured factStars are far-away suns.Stars
• Measured factA light-year is a distance, not a time.Stars
• Measured factThe closest night star is about four light-years away.Stars
• Measured factOur Sun lives in the Milky Way galaxy.Stars
• Measured factThe Sun is the closest star to Earth.Stars
• Theory being testedMany stars may have planets we have not found yet.Stars
• Story people enjoyA great bear lives where those stars are.Stars
• Measured factRockets can work in space because they carry their own gas to push.Rockets
• Measured factA rocket goes forward when its gas shoots backward.Rockets
• Measured factSputnik was the first spacecraft to orbit Earth, in 1957.Rockets
• Measured factThe International Space Station is a home in orbit around Earth.Rockets
• Measured factRovers drive on Mars and send pictures home.Rockets
• Measured factA space telescope such as James Webb studies faint light from far away.Rockets
• Theory being testedA wormhole or a warp drive would be a new kind of travel.Rockets
• Story people enjoySpaceships fly faster than light.Rockets
• Measured factDay and night happen because Earth turns.Earth
• Measured factSeasons happen because Earth is tilted.Earth
• Measured factEarth has air and liquid water.Earth
• Measured factGravity pulls things toward Earth and keeps the Moon in orbit.Earth
• Measured factEarth is the third planet from the Sun.Earth
• Theory being testedThere may be life we have not met.Earth
• Story people enjoyEarth rides on the back of a giant animal.Earth
• Measured factEarth is round.Earth