Floating in Space • 22m
Home! Earth, the 3d planet from the Sun, formed 4.5 bya and weighs 6.58 billion trillion tons. Earth is not a perfect sphere, but an oblate spheroid, “squashed” a little at the North and South poles. The equatorial diameter is about 7,926 miles, but the polar diameter is 7,899.86 miles. Earth’s spinning molten core produces the magnetosphere, a magnetic shield around the planet which largely protects the atmosphere from being blown away by solar winds.
Up Next in Floating in Space
Visit Mars, the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury. In English, Mars carries the name of the Roman god of war and is often referred to as the 'Red Planet'. The latter refers to the effect of the iron oxide prevalent on Mars' surface, which ...
Visit Saturn, the 6th planet from the Sun and the 2nd-largest in the Solar System. The gas giant has over 80 moons and the most extensive ring system of any planet in the Solar System. It is more than 95 times the size than Earth, but only one-eighth as dense. It would float in a large enough poo...