Article
Article
Hubble Space Telescope
Article By:
Voit, Mark Space Telescope Science Institute, Baltimore, Maryland.
Last updated:2014
DOI:https://doi.org/10.1036/1097-8542.757724
The Hubble Space Telescope is the largest visible-light observatory ever placed into space. Hubble's orbit, some 612 km (380 mi) above Earth's surface (Fig. 1), keeps it above almost all of Earth's atmosphere, at a location where its view of the heavens is much clearer than that of ground-based telescopes. The superior view afforded by Hubble's orbit has made the telescope a unique resource for astronomers worldwide and has led to fundamental discoveries about the size and age of the universe, the birth and death of stars, and the development of galaxies.
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