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Beyond our solar system, countless alien worlds of lava, ice, water and noxious gas swirl through the cosmos. Here are some of the strangest exoplanets that scientists have discovered so far. When you ...

Researchers are studying eccentric warm Jupiters, giant exoplanets that follow odd, elongated orbits unlike anything in our solar system.

Seven planets are aligning in the night sky and will be visible Friday, February 28. The alignment, also called a "planet parade," happens when planets' orbits around the sun cause them to appear ...