When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

The new moon on Aug. 23 at 2:06 a.m. EDT (0606 UTC) is also a black moon, defined as the third new moon in a season that will see four new moons. Three days later, the moon will make a close pass to ...

The planet Mars currently appears rather dull and uninteresting in the night sky, yet it is also drawing nearer to us with each passing day. As we noted last month, 2011 is an "off year" for the ...

Local researchers are developing nuclear power, propulsion systems, and medical technology for NASA's ambitious plans to ...

This year, the Perseids meteor shower (typically the most impressive of the year) was washed out by a bright full Moon. Fortunately, skywatchers have a consolation prize in August with the second and ...

Combing through 20 years of images from the European Space Agency's Mars Express and ExoMars Trace Gas Orbiter spacecraft, ...

Mars is known for its barren desert landscape and dry climate. But two recent studies go beneath the surface: They explore the interior of the red planet using seismic data from NASA's InSight mission ...

For this week’s Fault Lines column, Jon Allsop is filling in for Jay Caspian Kang. In 1877, Giovanni Schiaparelli, an Italian astronomer (and uncle of the fashion icon Elsa), started making a map of ...

New study shows Mars went through shrinking ice ages, revealing how it lost water and where future missions might find what's ...