Earth's atmosphere is the only one that can support life as we know it. It is composed of around 78% nitrogen, 21% oxygen, and 1% of other gasses like carbon dioxide and neon.
Fun Facts About Earth!
Earth is so far the only world we have found that can sustain life
Earth's surface is about 71% water
Earth isn't perfectly round! It bulges around the equator
Moons
Check out the moons of this planet...
NAME:
The Moon
SIZE:
2160 miles
HISTORY OF NAME
Simply called "The Moon" because we did not know other moons existed before Galileo discovered four moons on Jupiter in 1610