NASA's cutting-edge space telescopes continue to unravel the mysteries of the universe, capturing breathtaking images of ...

This image of twin bubbles stretching 25,000 light-years from the galactic center was captured by NASA's Fermi Gamma-ray ...

15, 1612, the Andromeda ... glowing cloud of space dust. Even after Simon Marius saw it through a telescope for the first time, he still couldn't tell that it was actually a galaxy filled with ...

An curved arrow pointing right. Scientists using NASA's Fermi Gamma-ray Space Telescope have detected a mysterious signal in the Andromeda Galaxy. They're not sure what it is, yet, but there's a ...

The Hubble is just one of NASA's orbiting "great observatories." The group also includes the Spitzer Space Telescope and the Chandra X-ray Observatory. Spitzer is an infrared orbiting telescope ...

The Hubble Space Telescope has captured nearly 7,400 exposures of the Andromeda Galaxy, creating a mosaic image that reveals over 100 million stars and thousands of star clusters within its disk.

The most powerful telescope ever put into space has made a historic discovery ... In the Milky Way and nearby galaxies, such as the Andromeda Galaxy, astronomers can observe stars one by one.

“Our galaxy and Andromeda are both so big, there’s hardly any space between the two galaxies ... This image, captured with the VISTA infrared survey telescope, shows the central part ...

This illustration shows a stage in the predicted merger between our Milky Way galaxy and the ... [+] neighboring Andromeda galaxy ... 100,000 light years into space. “We found it everywhere ...