A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

TRAPPIST-1 is an ultra-cool dwarf with seven Earth-size planets orbiting it. (Photo digital Illustration by NASA/NASA via Getty Images) Scientists have just completed an extensive search for signs of ...

This cosmic visitor is now officially named 3I/ATLAS, and it appears to be a comet from another solar system. Reading time 3 minutes Update: July 3, 09:24 a.m. ET: On Wednesday, July 2, the ...