Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

Astronomers have achieved a groundbreaking feat by capturing the first clear image of a star in another galaxy. This ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

Learn about the size, temperature, and colour of each planet, and discover why Pluto is no longer considered a planet.

New ground- and space-based infrared observations are giving astronomers a better handle on the true populations of red ...

The universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous—and highly ...

One of the first constellations amateur astronomers come to recognize, the Queen offers observers many worthy sights.

The magnificent Andromeda galaxy (Messier 31), stands out as the most important nearby stellar island to our Milky Way, and ...

Leo P, a small galaxy and a distant neighbor of the Milky Way, is lighting the way for astronomers to better understand star formation and how a galaxy grows. Scientists have reported finding that Leo ...

The Milky Way and thousands of other galaxies are drawn to "something": We have no idea what it is. The Great Attractor is a ...