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Add Yahoo as a preferred source to see more of our stories on Google. Astronomers discover potential dwarf planet 2017 OF201 beyond Neptune. (photo credit: Sihao Cheng et al) The researchers said 2017 ...

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...

Our solar system is much like a trail of microcosmic breadcrumbs: Follow the molecular bits as far back as they go, and you'll learn a thing or two about where many of our planets and other celestial ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of our solar system, evading all our efforts to spot it. Some astronomers ...

A Southwest Research Institute-led team has discovered an elusive, dark moon orbiting Makemake, one of the “big four” dwarf planets populating the Kuiper Belt region at the edge of our solar system.

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 years to complete one orbit around the sun. Subscribe to read this story ...