The Solar System
Inner planets
Mercury
- A year is 88 earth days long
- Mercury is the most cratered planet
- Only two spacescrafts have ever been to mercury
- Mercury has wrinkles (lobate scarps)
Venus
- This is the second brightest object in the night sky
- The outer layer is made up of sulfuric acid
- It is called earths sister
- It takes 243 earth days to rotate once
Earth
- Only known planet to support life
- Is the only planter NOT named after a god
- It's the largest terrestrial planet
- The earths rotation is gradually slowing,one day we could have 25 hour days
Mars
- Its composed primarily of carbon dioxide
- Notable satellites: photos+ Deimos
- Only 16 missions to mars have been successful
- Pieces of mars have fallen to earth over the earth