Comet Pons-Brooks has quite a tail to tell. First discovered in 1385, this erupting dirty snowball loops back into our inner Solar System every 71 years and, this time, is […]

Here is what the Earth looks like during a solar eclipse. The shadow of the Moon can be seen darkening part of Earth. This shadow moved across the Earth at […]

This close-up from the Mars Reconnaissance Orbiter’s HiRISE camera shows weathered craters and windblown deposits in southern Acidalia Planitia. A striking shade of blue in standard HiRISE image colors, to […]

A tiny moon with a scary name, Phobos emerges from behind the Red Planet in this timelapse sequence from the Earth-orbiting Hubble Space Telescope. Over 22 minutes the 13 separate […]

This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring. Famous as the Leo Triplet, the three magnificent galaxies found in the […]

Across the heart of the Virgo Galaxy Cluster lies a string of galaxies known as Markarian’s Chain. Prominent in Markarian’s Chain are these two interacting galaxies, NGC 4438 (left) and […]

What’s that at the end of the road? The Sun. Many towns have roads that run east-west, and on two days each year, the Sun rises and sets right down […]

A bright comet will be visible during next month’s total solar eclipse. This very unusual coincidence occurs because Comet 12P/Pons-Brooks’s return to the inner Solar System places it by chance […]

The southern winter Milky Way sprawls across this night skyscape. Looking due south, the webcam view was recorded near local midnight on March 11 in dry, dark skies over the […]

Big, beautiful spiral galaxy NGC 1055 is a dominant member of a small galaxy group a mere 60 million light-years away toward the aquatically intimidating constellation Cetus. Seen edge-on, the […]