Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA's Curiosity rover using its ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may ...

While the Martian clouds may look like the kind seen in Earth’s skies, they include frozen carbon dioxide, or dry ice.

Look up this week for February’s full snow moon and to catch the last glimpse of a visible parade of planets in the night sky ...

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the ...

Tonight starts a great week of star gazing. Here's when to watch the full moon next to Venus, and a rare planetary parade ...

By removing centuries of soot, researchers have uncovered the stunning decoration of a sanctuary dedicated to the heavens ...

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

The moon makes for an excellent guide to see Mars in the night sky tonight. As the sun sets this evening (Feb. 9), the moon ...

According to NASA, four to five planets being visible across the sky at the same time happens only once every few years.