Sky This Week is brought to you in part by Celestron. Friday, September 19The Moon passes 0.8° north of Venus and 1.3° north ...

When we look up at the night sky, most of us see stars, most of which are relatively close: less than 5,000 light-years from Earth. (The word “relatively” is a necessary qualifier, as a light-year is ...

This annual showcase highlights some of the world's best space photography, with winners, runners-up, and highly commended ...

Sadly, summer comes to an end this month. But the great news for stargazing this September is that there’s so much happening ...

Today, let's talk about something truly astonishing in the universe — in 3.7 billion years, the Milky Way and the Andromeda Galaxy are going to collide! This news is absolutely incredible; just ...

Researchers have long thought that the Milky Way would collide with the Andromeda galaxy in four to five billion years. This scientific illustration depicts Earth's horizon four billion years in the ...

Photographers Weitang Liang, Qi Yang and Chuhong Yu have beaten thousands of amateur and professional photographers from around the world to bag the 2025 Royal Observatory Greenwich’s ZWO Astronomy ...

California skies feature a six-planet parade on early morning of Aug. 10. Perseid meteor shower peaks Aug. 12–13, but bright moon hampers visibility. New moon on Aug. 22 offers ideal conditions for ...

You still may be able to spot the Milky Way's galactic center in the night sky across the US, but time is running out.

For astronomers studying dark matter, the Bullet Cluster is one of the greatest laboratories in the universe. Follow-up ...

As we chatted, I suddenly had a thought: what if there really are aliens in the Andromeda Galaxy? Can they see us Earthlings ...

The Milky Way is expected to shine every night through August as it gets higher in a darker sky throughout the United States, ...