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

Shutterstock Astronomers have known that black holes exist for some time. Ever since Einstein’s general theory of relatively, ...

Four University of Arizona scientists have been selected to receive “Oscar of Science” awards for their collaborative work on the Event Horizon Telescope project and for capturing the first ...

The Golden Handle, a monthly lunar spectacle, will be visible tonight as sunlight illuminates the Montes Jura mountain range ...

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 ...

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

When the Sun hits the rims of the Blanchinus, La Caille, and Purbach craters at just the right angles during the Moon's cycle ...

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

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

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, ...