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Earth is the only planet we know of that humans can live on. About 71 percent of Earth is covered with water although only 1 percent of it is drinkable. Earth is the fifth largest planet and the third planet from the sun. |
| Properties of Earth | |
|---|---|
| Mass | 6x1024 kg |
| Average Distance from Sun | 149.6 million kms/93 million miles |
| Distance from Earth | Not Applicable |
| Length of Year | 365.26 Earth days (to rotate the sun) |
| Rotation Time | 24 hours (on its own axis) |
| Angle of Axis | 23.45 degrees |
| Diameter | 12,756 kms/7,926 miles |
| Number of Satellites | 1 |
| Number of Rings | 0 |
| Number of Moons | 1 |
| Temperature | Average of -127 F to 136 F/-88 C to 58 C |
| Weight on Earth | A 100 pound person would weigh 100 pounds |
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Mars is the seventh largest planet, although it is much smaller than Earth. The largest volcano we know of isn't on Earth - it's on Mars. Olympus Mons is the tallest volcano in our solar system and is three times taller than Mt. Everest. There's also a huge canyon called Vallis Marineris. |
| Properties of Mars | |
|---|---|
| Mass | 6.4191 |
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