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Video @ Questions answered Add an in-text citation using MLA format. The types of planets that have been discovered outside of our solar system vary greatly 4 Time elapsed Source: "Super Earths" by Adam Hadhazy, page 40. Published in Discover Sept. 2015: 00 05 25 HR MIN SEC Among the 1,900-and-counting confirmed alien planets found so far, we've seen everything from bizarro, jumbo versions of Jupiter in scorchingly tight orbits to SmartScore out of 100 7 exoplanets dozens of times farther out than Neptune, and even worlds circling two stars, like Tatooine in Star Wars. 19 Submit