As soon as it gets dark, two bright lights become visible—the brightest in the southwest and an almost-as-bright light in the east. What are they?

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...

NASA estimates that there are nearly 6,000 tons of space junk in low Earth orbit, moving around our planet at speeds up to 18,000 mph. Most space debris is from human-made objects like pieces of ...

Starting at 12:30 p.m. ET (1730 GMT) on Saturday (Jan. 25), astrophysicist Gianluca Masi of the Virtual Telescope Project ...

If you’ve looked up at the night sky recently, you may have noticed some things that look a little out of the usual.

Plus: Saturn’s moon Iapetus is visible, our Moon passes the bright star Spica, and Mars skims south of Pollux in Gemini in ...

A spectacular pink, red and orange sunset bathed skies in the most incredible light as these photographs ... "I got ready as fast as I could - I thought the sky is more exciting than this ...

The Moon meets the Red Planet’s rival in Scorpius, skims close to Saturn, and reaches New phase in the sky this week.

The night sky is putting on a celestial show with a dazzling "planetary parade" featuring six major planets and a bonus comet ...

Blue and violet light On a sunny day, shorter wavelengths (like blue and violet) scatter most effectively due to Rayleigh scattering, which is precisely why the sky is blue. At sunset, however ...