The Andromeda Galaxy, our closest galactic neighbor, just 2.5 million light-years away, has long captivated astronomers with its spiral beauty and immense star system, home to nearly a trillion ...

By studying a Cepheid variable star within the Andromeda Galaxy, Edwin Hubble proved that Andromeda was too far away to be a nebula within the Milky Way.

The Andromeda galaxy lies just beyond (...OK, about 2.5 million light-years beyond) our galaxy, the Milky Way. For the past hundred years or so, scientists thought these galaxies existed in a long ...

NASA's Chandra X-ray Observatory provides a new look at the Andromeda galaxy in this multi-wavelength image that includes X-ray, ultraviolet, optical, infrared, and radio images and illustrates the ...

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On a clear night, some stars of the galaxy can be seen from Earth.

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 ...

A new image from NASA composed of different wavelengths created a stunning image of Andromeda. “This new image of M31 is released in tribute to the groundbreaking legacy of Dr. Vera Rubin, whose ...

NASA's Chandra X-ray space telescope has captured a breathtaking image of the neighboring Andromeda galaxy, in a tribute to dark matter pioneer Vera Rubin.

A new image from NASA composed of different wavelengths created a stunning image of Andromeda. “This new image of M31 is released in tribute to the groundbreaking legacy of Dr. Vera Rubin, whose ...