| Question | Answer |
| Fact Card #1 | The sun is 93-million miles away from Earth. This is equal to 146-million kilometers.
|
Fact Card #2 | Mercury is the closest planet to the sun, but it is not the hottest. Venus is the hottest planet because it has many clouds that trap in heat.
| Fact Card #3 | Venus has more volcanoes than any other planet.
| Fact Card #4 | There is only one star in our solar system - the sun. Our galaxy has millions of stars.
| Fact Card #5 | Earth is the only planet people have ever walked on. Astronauts have also walked on the Earth's moon, but that's not a planet.
| Fact Card #6 | Scientists have sent robots, called rovers, to explore Mars. The rovers drive around the surface of Mars, take pictures, and send them back to Earth.
| Fact Card #7 | Mars has two small moons named Phobos and Deimos.
| Fact Card #8 | Jupiter, the largest planet, has a "Great Red Spot." The red spot is a huge wind storm.
| Fact Card #9 | Saturn is famous for it's bright rings, but it isn't the only planet with rings. Jupiter, Uranus, and Neptune also have them.
| Fact Card #10 | Jupiter, Saturn, Uranus, and Neptuen are known as "Gas Giants" because they're made of mostly gas.
| Fact Card #11 | Uranus is the coldest planet in our solar system.
| Fact Card #12 | Neptune is the stormiest planet. Its wind storms blow three times as fast as hurricanes.
| Fact Card #13 | Pluto used to be considered a planet. Scientists decided it was too small to be a "real planet," so it is now a dwarf planet.
| Fact Card #14 | There are five known dwarf planets in our solar system. Their names are Pluto, Ceres, Haumea, Makemake, and Eris.
| Fact Card #15 | It takes light eight minutes to travel from the sun to Earth. The sunlight you see outside right now, actually left the sun's surface eight minutes ago.
| Fact Card #16 | Pluto has three moons. Their names are Charon, Nix, and Hydra.
| Fact Card #17 | Neil Armstrong and Buzz Aldrin were the first people to walk on the moon.
| Fact Card #18 | Twelve astronauts have walked on the moon. The first astronaut walked on teh moon in 1969. The last astronaut walked on the moon in 1972. |
