A waxing gibbous moon and the ringed planet Saturn will enlighten our sky for treat-or-treaters this Halloween.

The month brings a spectacular lineup of celestial sights—including a rare chance to see Mercury without a telescope and a ...

While there is the expression “Once in a blue moon,” once in a while, there is a Black Moon too. Later in August, a rare Black Moon will be seen — or rather, hidden — in the night sky. A Black Moon is ...

Find out what's up in your night sky during November 2025 and how to see it in this Space.com stargazing guide.

The glow of the moon will even cast faint shadows on the ground, a rare effect visible only during the most intense ...

Looking for a sky event this week? Check out our full Sky This Week column. October 18: Io, Europa, and their shadows cross ...

At magnitude 9.5, the Ghost’s Goblet is visible in binoculars and even more striking through a telescope, where its triangular core appears as the “cup” of a ghostly goblet. Astronomy contributor ...

New moons are only visible during solar eclipses. This visualization of a tiny sliver, for example, is technically a crescent moon. NASA Goddard Space Flight Center via Flickr under CC BY 2.0 This ...

This is a clear picture of the moon taken with a long zoom lens with the milky way in the background (George Pachantouris, ©2022 George Pachantouris) HOUSTON – Tonight, skywatchers in Houston will ...

A mysterious spiraling blue light illuminated the night skies over Europe on Monday. The cosmic whirlpool was captured in stunning video and appears to have been created by the SpaceX Falcon 9 rocket ...

The waning Moon will pass near Neptune and Saturn in the pre-dawn sky. Saturn and Neptune will appear close together, though they are billions of miles apart. Neptune is too dim to see without ...

The Moon passes 0.3° south of the bright red giant star Antares at 7 P.M. EST. However, the pair isn’t visible this evening, as they’ll rise in the early-morning sky, so we’ll feature them tomorrow.