Mars’ moons are easily visible at night from the Red Planet. Larger Phobos is brighter, while smaller Deimos is still brighter than any star.

A wonderful celestial event known as a total lunar eclipse will occur in the skies above North America during the morning ...

A study led by SETI Institute scientist Matija Ćuk proposes that Saturn’s bright rings and its largest moon, Titan, may have both originated in collisions among its moons. This study was accepted for ...

The Moon passes 1.8° north of Venus at 4 A.M. EST, then passes 0.1° south of Mercury at 6 P.M. EST. Both planets are visible in the evening sky, though Venus is low, only about 12° high in the ...

New Moon occurs at 7:01 A.M. EST, bringing an annular solar eclipse to Antarctica and part of the Southern Ocean. Only travelers in these regions will see the Moon cover nearly all of the Sun’s disk, ...

Asteroid 44 Nysa may be just past opposition, but it’s still placed perfectly for evening viewing in Cancer the Crab. Wait until a few hours after sunset, when Cancer is high in the eastern sky, and ...

On Tuesday, February 17, an annular eclipse of the Sun will occur. Here’s the catch, though: It will only be visible as annular along a thin line in Antarctica. From the southern tips of Chile and ...

When NASA’s OSIRIS-REx mission brought back samples from asteroid 101955 Bennu, researchers found that they contained amino acids, the building blocks necessary for life. Amino acids are the molecules ...

Visible in Scorpius before dawn, our waning satellite is close to the 3rd-magnitude star Pi (π) Scorpii and less than 8° from Antares, the Scorpion’s bright red heart. The Moon will pass 0.7° south of ...

I’ve read that the planned crewed Mars missions will take six months or two years to arrive. Which is it? Could a longer trip be due to the heavy payload? Our rovers took only eight to nine months to ...