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

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

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

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

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

Visible in Scotland, the total solar eclipse of Aug. 2, 1133, featured nearly 4½ minutes of totality. This eclipse provides just one of many historical examples of people wrongly associating a ...

Solar and lunar eclipses both occur this month, as Mars and Jupiter meet in the early morning and the Perseid meteor shower peaks.

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

After a scrubbed countdown earlier this month, Starship Flight 13 will attempt to deploy 20 Starlink V3 satellites, relight a ...

Mercury reaches its greatest western elongation at 4 A.M. EDT, standing 19° from the Sun. The tiny planet reaches an altitude of almost 5° above the eastern horizon an hour before sunrise, glowing at ...

Shooting stars streak overhead, but they’re fighting the July Full Buck Moon that shines brightly in the sky this week.