In 2003, Hubble found a massive exoplanet ... The planet lies in a globular cluster, Messier 4, over 6,000 light-years from Earth. Globular clusters are ancient, tightly packed balls of hundreds ...

For over a century, astronomers have marveled at the beauty and complexity of spiral galaxies, which feature arms covered in ...

Hubble and its fellow observatories give us an unprecedented, crystal-clear look at the far reaches of the cosmos. Explore these orbiting pioneers and learn what they've discovered. 3 min read The ...

Messier 90 is one of the few galaxies moving closer to us. Credit: ESA/HUBBLE & NASA, W. SARGENT ET AL. Most galaxies are traveling away from our galaxy, not closer to it. Still, there are exceptions.