The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

The four planet-strong "planet parade" currently visible to the naked eye in the night sky for a short time after sunset will ...

The zodiacal light shines in the evening as the Moon reaches Last Quarter and skims past Spica and Antares in the sky this ...

From supermoons to a total eclipse to the national park’s biggest and best-attended star parties, these are the must-see celestial shows of the year ...

The space station and one other Easter egg — the site of NASA's next human moon landing — are hidden in this lucky photo.

Six planets are part of the alignment, which will last until Feb. 18. Mercury will join the alignment later in the month.

NASA still views the moon as a stepping stone to Mars, even though Elon Musk has dismissed Earth's nearest neighbor as "a ...

The moon reached its peak brightness at 8:53 a.m. EST (1353 GMT) on Feb. 12, but local moonrise and moonset times will depend ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

Around the time of your romantic dinner, head outside and look to the southwest to spot the super brilliant planet in the night sky ...

At the end of February we will be able to see all of the planets all in a line in our Minnesota night sky! Here's when and ...