The Earth was formed many years ago by the Big-Bang theory. It's hard to imagine planets crushing against each other then forming it self again.

   The other planets were formed with big bang too. And eventually it created the solar system. There were 9 planets but it changed to 8 because Pluto was too small for fitting in the solar system. 

   In the solar system, eachplanet  represents a Greek god. Mercury represents Hermes (The god of theif), Venus represents Aphrodite (The god of love), Mars represents Aries (The god of war), Jupiter represents Zeus (God of the sky), Saturn represents Kronos, Uranus represents Uranus(God of the heaven), Neptune represents Poseidon (The god of sea).

   When a planet is turned on its axis it's called "rotation." It only takes one day to do a rotation. When it revolves around the Sun it's called "revolution" This takes 1 year. This cycle wouldn't end. It will keep pulling like a magnet like someone who likes you.

Good job!! Please do not write in yellow next time though!