The Hubble telescope. The Hubble Space Telescope orbits just above Earth’s atmosphere at an altitude of approximately 320 miles. When Hubble launched in 1990, it was expected to have a lifespan ...

The Hubble telescope. The Hubble Space Telescope orbits just above Earth’s atmosphere at an altitude of approximately 320 miles. When Hubble launched in 1990, it was expected to have a lifespan ...

The Kepler Space Telescope, named for astronomer Johannes Kepler, was NASA's first exoplanet hunting telescope. It launched on March 6, 2009, with the goal of observing more than 100,000 stars in ...

Space Week is Oct. 4-10, so here are some of NASA’s latest discoveries and why Edwin Hubble’s history-making photo, taken on this day in 1923, revolutionized astronomy. Courtesy NASA This ...

Dr Edwin Powell Hubble, who lends his name to the iconic Hubble Space Telescope, was one of the leading astronomers of the twentieth century. Born 135 years ago today on 20 November 1889, his ...

The Eagle Nebula is just one of several celestial targets Hubble is revisiting for its 35th anniversary. By capturing different angles and using data differently, the telescope is able to produce ...

Edwin Hubble uses the telescope at the Mount Wilson Observatory. Photo by Ann Ronan Pictures/Print Collector/Getty Images Print Collector Estimating distances in astronomy is challenging.