Earth is the only planet in our solar system with a single moon, making it a rare phenomenon for a planet of its kind.

A new moon is when the moon shares the same celestial longitude as the sun; the two bodies are said to be in conjunction.

Summer is officially over September 22, at 2:19 p.m. Time to hang up the surfboard, deflate the beach balls, stow the grill, put away the Hawaiian shirts, and have a good cry. Naturally you're angry.

On Sept. 20, Venus will clash with rebellious Uranus, the planet of chaos, breakthroughs and unexpected change. Sparks will ...

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be visible across the U.S.

In a world driven by data, algorithms, and relentless scientific progress, you’d think we’d have all the answers by now. But ...

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

TRAPPIST-1e shows no signs of its first atmosphere, but hints of a secondary one remain. Liquid water could still be possible ...

How you experience pleasure, take in and create beauty, relate to others and nurture heartfelt bonds and bring in your bottom ...

Some observers may have noticed a faint glow illuminating the darker portion of the moon—a phenomenon known as Earthshine or ...

Set your alarm for a stunning spectacle! Venus, Moon, and Regulus will align in Leo Saturday morning. The rare celestial ...

Because of the sun's positioning in the days just before, during and after the equinox, those looking down east-west roads in Chicago and the suburbs will be able to see the sun framed by much of the ...