The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration.

Mercury will reach its greatest eastern elongation, marking the point where it is farthest from the Sun in the evening sky.

The "new stars" are best seen from the Southern Hemisphere, but people have spotted them from the United States by looking ...

Less than two weeks later, on June 25, reports began to circulate of a second nova blossoming in the southern night sky, this ...

July 2025 promises a cosmic spectacle with star clusters, meteor showers, and rare planetary sightings, including the elusive ...

Friday, July 4 Mercury reaches its greatest eastern elongation from the Sun, standing 26° from our star at 1 A.M. EDT. We’ll ...

Mercury is the month's highlight, reaching greatest elongation July 4. Also on show in the Southern Hemisphere: Mars, Saturn, and Venus.

The lunar X and lunar V will only be observable through a telescope or binoculars pointed at the Moon’s terminator – the line ...

Earth lives in a shooting gallery, with small and large rocky bodies in abundance in our solar system. Are we in danger of ...

On June 29th, skywatchers are in for a treat as the Moon and Mars will appear in a close conjunction, only 0.2 degrees apart, ...

Some folks already caught a sci-fi-level glimpse of it on Thursday, when a blazing meteor put a hole in a Georgia house.

Astronomers have spotted another never-before-seen "nova" blaze to life in the night sky. This may be the first time that ...