(April 22) -- Blue seas, marbled terrain, swirling white clouds. In celebration of Earth Day Wednesday, NASA reached deep into its archives for stunning images of the planet that we call home. One photo offers a dire reminder: Global warming could change the Earth as we know it. See the photos below, and find out 10 things you may not know about the third rock from the sun. Further down, see the planet's frightening forecast over the next few years, decades and beyond.
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Amazing Space Images
This image taken by NASA with an infrared telescope in Hawaii shows a large impact on Jupiter's south polar region early Monday. Astronomers say Jupiter was apparently struck by an object, possibly a comet. It happened on the 15th anniversary of another comet strike.
JPL / NASA / AP
JPL / NASA / AP
