Wendy Freedman and her team have been able to measure the expansion of our universe, leading to more insights into the cosmos ...

John Grunsfeld has a model of the Hubble Space Telescope on his bookshelf ... It wasn't always that way. There was a time when Hubble had the potential to become NASA's biggest embarrassment.

However, the "cosmic zoo" hinted at in early Hubble images inspired Robert Williams, then director of the Space Telescope Science Institute, to dedicate his discretionary observation time in 1994 ...

strategies and techniques they would need to successfully repair the space telescope for the last time. In the more than a decade and a half since astronauts last visited Hubble, the telescope has ...

During its 35 years of orbiting the Earth, the Hubble Space Telescope has transmitted endless streams of magnificent images, confirmed the existence of "dark matter," and helped track a vagabond ...

After 35 years, the Hubble Space Telescope is still churning out hits ... during the collision of two asteroids. It was the first time scientists had observed the aftermath of such a crash.

Not one to waste time, Hubble quickly made another moon-related discovery by helping the Kepler Space Telescope find the first-ever signs of an exoplanet moon. While Kepler had the first inkling ...