What’s happening on the horizon? The horizon itself, past a spinach field in Guatemala, shows not only trees but a large volcano: the Volcán de Fuego (Volcano of Fire). The […]

Many bright nebulae and star clusters in planet Earth’s sky are associated with the name of astronomer Charles Messier, from his famous 18th century catalog. His name is also given […]

Fans of our fair planet might recognize the outlines of these cosmic clouds. On the left, bright emission outlined by dark, obscuring dust lanes seems to trace a continental shape, […]

The small, northern constellation Triangulum harbors this magnificent face-on spiral galaxy, M33. Its popular names include the Pinwheel Galaxy or just the Triangulum Galaxy. M33 is over 50,000 light-years in […]

Few astronomical sights excite the imagination like the nearby stellar nursery known as the Orion Nebula. The Nebula’s glowing gas surrounds hot young stars at the edge of an immense […]

Some storms on Jupiter are quite complex. The swirling storm was captured late last month by the NASA’s robotic Juno spacecraft currently orbiting the Solar System’s largest planet. The featured […]

Follow this vertical panoramic view from horizon to horizon and your gaze will sweep through the zenith of a dark night sky over Pic du Midi mountaintop observatory. To make […]

In December of 1972, Apollo 17 astronauts Eugene Cernan and Harrison Schmitt spent about 75 hours on the Moon in the Taurus-Littrow valley, while colleague Ronald Evans orbited overhead. This […]

Nothing like it has ever been seen before. The unusual space rock ‘Oumuamua is so intriguing mainly because it is the first asteroid ever detected from outside our Solar System […]

Yes, but have you ever taken a selfie on Mars? The Curiosity rover on Mars has. This selfie was compiled from many smaller images — which is why the mechanical […]