Constellations

Celebrate International Dark Sky Week from anywhere, with sessions streaming online starting Sunday (April 19).

How to see the rare zodiacal light, the faint ghostly glow that appears when sunlight reflects off interplanetary debris likely left over from the formation of our solar system.

The constellation of Canis Major is visible in the winter sky this month.

A night-sky photo features a lonely stargazer admiring the beautiful constellation of Orion, the hunter — and it's strangely dimming star Betelgeuse.

Auriga is one of those star patterns whose exact origin is a hopeless mix of antique conceptions.

New infrared cameras and gel-based thrusters just might help future satellites dodge space debris, a new study finds.

One of the most colorful wonders of the summer sky in the Northern Hemisphere, especially for deep-sky photographers, is the Rho Ophiuchi cloud complex.

Step outside this week as soon as darkness falls and look directly overhead, and you will see the famous and very distinctive trio of bright stars collectively known as The Summer Triangle.