Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the +0.6-magnitude planet is low in the west-northwest and sets during twilight about 1.5 ...

Four prominent celestial objects — the moon, a bright planet and two bright stars — will come together to form a "celestial ...

The reason city folk can't see a true starry sky is light pollution ... And from April to August, guests can see the Nordic ...

It doesn't happen often that Mercury ranks as the planetary highlight of the evening sky, but July is an exception ... Mercury shines at magnitude 0.5, making it an easy target in the gathering ...

A bright moon greets sky-watchers as June begins, with a big orb skirting the southern horizon during the month’s first weekend. The moon is full at 11:41 p.m. Eastern time on Saturday.

There's something magical about looking up at a starry sky. Across cultures and millennia, people have looked to the night sky to inspire awe, fulfill curiosity and even deliver guidance. But as ...