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 ...

John Grunsfeld has a model of the Hubble Space Telescope on his bookshelf. It's right next to a model of a NASA space shuttle, which delivered Hubble to space 35 years ago, and it's no secret why ...

The Hubble Space Telescope. Having launched in 1990 — and even been tended to several times by astronauts in space — Hubble sits right in Earth's orbit and is responsible for some of the most ...