| Term | Definition |
|---|
| Earth | the 3rd planet from the sun, which is the only planet knon to the human race to sustain life |
| Venus | The hottest planet in the solar system and the 2nd planet from the sun |
| Mercury | The planet that is the closest to the sun |
| Uranus | a giant planet with a ring of ice particles which revolves on its side |
| Pluto | A dwarf planet farthest from the sun which is no longer classified as an actual planet |
| Neptune | The planet farthest from the sun (discluding pluto, considering it is too small to be a full fledged planet) made of cold gasses |
| Jupiter | the largest planet and the 5th from the sun |
| Mars | the 4th planet from the sun which is rumored to still have life due to the dry riverbeds, remnants of atmosphere, and seemingly plant remains and fossils |
| Saturn | A large planet with hundreds of rings of ice particles and dust and rocks |
| Asteroid Belt | The region separating the inner planets from the outer planets and which contains thousands of asteroids |
| Arm | A specific part of a galaxy which contains a few solar systems |
| Haley's comet | A comet named after the scientist who discovered it and it comes around earth every 76 years |
| Asteroid | any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter) |
| Meteoroid | (astronomy) any of the small solid extraterrestrial bodies that hits the earth's atmosphere |
| Comet | (astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit |
| Orion Arm | The arm of the galaxy in which humans live in |
| Andromeda Galaxy | The closest Galaxy to the milky way which is light years away |
| Proxima Centauri | The closest star to the geocentric solarsystem in which humans live in |
| Galaxy | a collection of star systems |
| Milky Way galaxy | The galaxy in which humans live in |
| Solar system | A group of planets, moons, asteroids, comets ans meteors that revolve around a central star or many stars |
| Geocentric | having the earth as the center (also the solar system we live in) |
| Sun | The star earth and the other planets revolve around which is only an average star |
| The moon | The object that revolves around the earth |
| Copper and nickel | This is what mercury is made out of |
| Ice and dust | This is what comets are made of |
| Approximately 6 trillion km | This is how far a light year is |
| 0 | This is how many brilliant and amazing moons mercury has |
| Dust hurricane | This is what the giant red spot on Jupiter |
| Craters | Gaping holes on random planets on moons |
| Solar eclipse | the moon interrupts light from the sun |
| Solar Flare | a sudden eruption of intense high-energy radiation from the sun's surface |
| Lunar eclipse | the earth interrupts light shining on the moon |
| Constellations | groups of stars forming patterns |
| Lightning | The hottest thing humans know that exists in the universe |
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