This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between ...

A mysterious spiraling blue light illuminated the night skies over Europe on Monday.The cosmic whirlpool was captured in ...

Although Sirius is predominantly a white star, you may also notice it twinkling red, white and blue. When stars appear lower in the night sky, they shine through more of Earth’s atmosphere.

A celestial phenomenon is forming in the Northern Hemisphere on Friday, as seven planets are expected to appear lined up in the night sky. Most are ... as both planets are blue and orbit in ...

The lunar spectacle was the product of two celestial events coming together: a blue moon, and a supermoon ... as the supermoon rises in the night sky. (Richard Vogel/AP) The supermoon can be ...

Stunning livecam imagery captured in Croatia shows a mesmerizing blue spiral in the night sky that left many people astounded on March 24. The phenomenon was likely caused by frozen fuel from the ...

Here’s how it works. Extremely rare, vibrant "moonbows" were spotted in the night sky above the U.S. shortly before the rise of the blue supermoon on Monday (Aug. 19). The moon will remain ...

When you go outside on a clear, moonless night ... you look in the sky, you’ll see sunlight directed toward you. Complicated physics makes these molecules scatter more blue light than red ...