Look east at sunset on Jan. 3 to see the fully-lit lunar disk climb over the eastern horizon. It will likely take on a ...

To enjoy the Geminid show, bundle up and venture away from city lights, which can drown out fireballs. The meteor shower will appear over the whole sky, so look to the darkest part or search for the ...

Conventional telescopes are limited in detecting low-surface-brightness (LSB) structures, which are essential for studying ...

New simulations of Milky Way-like galaxies reveal that the strange split between two chemically distinct groups of stars may ...

Auroras may be visible from Alaska to New York as an incoming coronal mass ejection is expected to slam into Earth today.

A brilliant point of light is rising in the eastern sky soon after dark this month, drawing comparisons to the "Star of ...

The bright binary star system V Sagittae will flare up multiple times before finally going supernova within the next 100 ...