Dense Fog Advisory in effect through 9 a.m. this morning for all of northeast Tennessee and most of southwest Virginia. Visibility in these areas could drop to 1/4 mile or less quickly. Limited ...

Astronomers have discovered a 200-light-year-wide Giant Molecular Cloud dubbed the Midpoint cloud that seems to be feeding star-building material to the heart of the Milky Way.

Temperatures were expected to hit triple digits Wednesday, although dense high clouds helped limit some of the heat, said Miles Langfeld, National Weather Service Fort Worth meteorologist. Instead ...

Arcus clouds are a low, horizontal cloud formation that are typically associated with the leading edge of a thunderstorm or ...

Astronomers using the Green Bank Telescope spotted surprisingly cold, dense hydrogen clouds embedded inside the Milky Way’s vast, super-hot Fermi bubbles—structures thought to be created by a ...