Earth
Earth is the only planet that humans can live on so far. The temperature, atmosphere and density are perfect for humans to live. About 30% of the surface is land while 70% is sea. The earth often appears to scientists to be split in half by the equator. The circumference of the equator is around 24,901 miles. The earth is also a terrestrial planet (a dense planet in our inner solar system.) It has one moon called Luna. Earth is the only planet that humans can live on so far. The temperature, atmosphere and density are perfect for humans to live. About 30% of the surface is land while 70% is sea. The earth often appears to scientists to be split in half by the equator. The circumference of the equator is around 24,901 miles. The earth is also a terrestrial planet (a dense planet in our inner solar system.) It has one moon called Luna.