For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Solar flares can affect us on Earth, and radiation from this flare caused a shortwave radio blackout. A map released by the National Oceanic and Atmospheric Administration (NOAA) shows the entirety of ...

Webb has captured a frigid exoplanet in a wildly tilted orbit, revealing a system shaped by past planetary violence and ...