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Earth


Earth, our home planet, 3rd from the sun, exists at the so-called "Goldilocks distance" from the sun (92,955,820 miles or 149,597,890 km), where it experiences neither too hot nor too cold temperatures, thus allowing liquid water to exist on its surface. It is the only known planet in the solar system to possess an atmosphere containing free oxygen, oceans of liquid water on its surface, and life. Its radius is about 3,958.8 miles (6,371.00 km). Earth is definitely the place!

Earth's Moon

Our moon is the only other place in the solar system that that humans have visited. It's a cold round rock possessing caches of frozen water. Our moon orbits the Earth about once every 27 days at a distance of 238,855 miles (384,400 km). The moon's gravitation pull creates the tides in Earth's bodies of water.

How did it form? The leading theory suggests that a body smashed into Earth approximately 4.5 billion years ago, and the debris from both Earth and the impactor accumulated to form our natural satellite. Let's go back and visit it again!

The Moon Overhead

 

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