The most mysterious planets in the known universe are all pretty strange planets: from planet methuselah, one of the oldest known exoplanets in the universe, to the Hell planet that reaches up to 4700 degrees Fahrenheit on one side and hundreds of degrees below 0 on the other, or TrES-2b which is the darkest planet in existence, these are the weirdest planets in space. WatchMojo counts down ten of the most mysterious planets we know about.
top 10, list, top 5, Strangest Planets in the Known Universe, strangest planets in space, Weirdest Planets to Have Been Discovered So Far, mysterious planets, planets, exoplanets, space, solar system, galaxy, universe, known universe, constellations, light years, 55 Cancri e, COROT-7b, Gliese 436 b, Kepler-438b, HD 209458 b, PSR B1620-26 b, J1407b, Gliese 581 c, TrES-2b, HD 106906 b, diamond planet, second earth, ice planet, hell planet, Gallifrey, Doctor Who, Kepler-1b, Methuselah planet, super Saturn, Osiris, watchmojo, top ten, best, worst, weirdest planets ever discovered, planet methuselah, weird planet names, strangest planets in the universe
