A total eclipse of the Sun coincides with the peak of the annual Perseid shower, plus Venus reaches dichotomy in the sky this ...

Mercury sits a few degrees due south of Pollux in Gemini early this morning, while Mars lies higher up along the ecliptic.

Tonight we’re focused on Jupiter, as two of its Galilean moons cross the planet’ disk this evening. East Coast observers can zoom in on the gas giant shortly after sunset to see Io alone to the planet ...

Astronomers have detected helium leaking from a rocky exoplanet, a sign that the planet may have an atmosphere. If confirmed, the finding represents the first such detection around an Earth-like world ...

Saturn’s two-toned moon Iapetus passes through superior conjunction, sitting just south of the ringed world this morning.

There are big challenges associated with such a mission, from readying a craft quickly to finding the comet and sending data ...

Mercury reaches its greatest western elongation, Iapetus passes close to Saturn, and the Moon occults the Pleiades in the sky ...

SpaceX flies a classified NRO mission from Cape Canaveral, China launches back-to-back Long March rockets in a single day, ...

The waning Moon steps up to form a triangle in the early-morning sky with two distant planets: Saturn and Neptune.

Main-belt asteroid 3 Juno reaches opposition today, although you might have to dodge the nearby bright Moon to spot it.

Rising shortly after sunset, July’s Full Moon, called the Buck Moon, dominates the sky tonight with its bright light.

This rich grouping of young suns shines brightly in Aquila the Eagle, ripe for observing just after sunset and before ...