Launched into Earth's orbit last June, GOES-19 is the newest addition to NOAA's fleet, equipped with a sensor called the ...

Images captured by NASA's Solar Dynamics Observatory have revealed that "coronal loops" give off subtle flashes of ultraviolet light before a solar flare, which could act as an early warning system ...

"One might think Mercury is very hot all the time because it's so close to the sun," Maria Vincent, an astronomer at the University of Hawaii, told Live Science. "But it's not — instead ...