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Space telescopes

View Resource 25 Years of Hubble

The Hubble Space Telescope was launched into low Earth orbit on April 25, 1990, supported by NASA funding that began in the 1970s. While the initial phase of the mission encountered problems (the main mirror was incorrectly manufactured and needed to be repaired), by 1993 Hubble was sending back some of the most magnificent images of the universe that humans have ever seen. This two-hour...

View Resource Kepler & K2 Science Center

NASA's Kepler Space Telescope, which launched in 2009, was officially retired in October 2018 after running out of fuel. Over its career, the telescope discovered 2,650 exoplanets and provided huge amounts of data that scientists are still exploring. Here, NASA provides a wealth of information intended primarily for researchers, though space enthusiasts may also find it of interest. The homepage...