50 interesting facts about Earth
50 interesting facts about Earth From extreme climates to peculiar creatures, here are some top facts about Earth. Did you know that our planet is rocketing around the sun at 67,000 mph? Or that it may once have been purple? Here are 50 facts about Earth. 1. WE'RE THE THIRD ROCK FROM THE SUN Our home, Earth , is the third planet from the sun and the only world known to support an atmosphere with free oxygen , oceans of liquid water on the surface and life. Earth is one of the four terrestrial planets, according to NASA (opens in new tab) : Like Mercury, Venus and Mars, it is rocky at the surface. 2. EARTH IS SQUASHED Earth is not a perfect sphere. According to the National Oceanic and Atmospheric Administration (NOAA) (opens in new tab) , as Earth spins, gravity points toward the center of our planet (assuming for explanation's sake that Earth is a perfect sphere), and a centrifugal ...