For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the Andromeda galaxy. Don't go looking for it -- the flickering star is 2.2 million ...

Looking at a distant galaxy means looking back in time.

The stunning spiral arms of the nearby galaxy Messier 81 are beautifully showcased by NASA's Spitzer Space Telescope. NASA's ...

In the Milky Way and nearby galaxies, such as the Andromeda Galaxy, astronomers can observe stars one by one. But for ...

NASA’s Spitzer Telescope revealed the Milky Way’s hidden center, using infrared to uncover its dense, star-packed core. This ...

In an astronomical feat, using NASA's James Webb Space Telescope, a team of astronomers observed a distant galaxy, uncovering ...

Photos from the James Webb Space Telescope have revealed more than 40 stars within the gravitationally lensed "Dragon Arc" ...

Researchers have finished equipping the Subaru Telescope with a new special "compound eye," culminating several years of ...

In commemoration of Edwin Hubble's discovery of a Cepheid variable class star, called V1, in the neighboring Andromeda galaxy 100 years ago, astronomers partnered with the American Association of ...

It proved the Andromeda Nebula is immensely distant from Earth, demonstrating that the Milky Way is not the whole universe, ...