Cepheid stars have predictable brightness changes linked to their periods. This period-brightness relationship lets astronomers calculate a Cepheid's distance. Hubble found a Cepheid in the Andromeda ...

Over the course of human history, perhaps no single object in the night sky has drawn more attention than the Andromeda ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

The Hubble Telescope viewed a distant galaxy whose light appears to contradict some of the most common rules of quantum physics. When you purchase through links on our site, we may earn an affiliate ...

The Hubble Space Telescope, a cornerstone of modern astronomy, has been providing breathtaking images and invaluable data for over three decades. As a collaboration between NASA and the European Space ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

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 ...

Hubble captured a breathtaking view of NGC 6000, a spiral galaxy where blue newborn stars shine beside golden, aging ones.

For decades, astronomers have said of our Milky Way galaxy is headed for an inevitable, head-on collision with its colossal neighbor, Andromeda, in approximately 4.5 billion years. This collision, ...