Hubble Space Telescope: Difference between revisions
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{{Infobox spaceflight|name=Hubble Space Telescope|mission_type=[[Space observatory]]|operator=NASA|website={{URL|https://www.nasa.gov/mission_pages/hubble/main/index.html}}|mission_duration={{time interval|April 24, 1990}} <br/> (ongoing)|manufacturer=Lockheed Martin|launch_date=April 24, 1990|launch_rocket=Space Shuttle Discovery|launch_site=Kennedy Space Center LC-39A|launch_contractor=NASA|programme=Great Observatories Program|previous_mission=None|next_mission=[[Compton Gamma-Ray Observatory]]|disposal_type=Deorbited|decay_date=2030-2040 (planned)}}
▲The '''Hubble Space Telescope''' (HST) is the first big optical [[space observatory]] telescope. Being above the [[atmosphere]] means it can see the [[sky]] more clearly than a telescope on the ground. The atmosphere blurs starlight before it reaches [[Earth]]. Named after the astronomer [[Edwin Hubble]], the Hubble Space Telescope can observe 24 hours a day. The main mirror is 94.5 inches (2.4 meters) across. The telescope can take pictures of things so far away it would be nearly impossible to see them from anywhere else.
It was made by both [[NASA]] and the [[ESA]] working together. It is 600 km in [[Outer space|space]] and was launched on April 24, 1990. Like other things in [[low Earth orbit]] it travels at 5 miles (10 km) per second. If you were going this speed on Earth, you would be able to get from [[New York City|New York]] to [[San Francisco]] in 10 minutes. This speed creates difficulty in scheduling observations.<ref>{{Cite web|url=http://hubblesite.org/the_telescope/team_hubble/|title=HubbleSite - The Telescope - Team Hubble|website=hubblesite.org|access-date=2018-11-01}}</ref>
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* In 2004, Hubble looked back several billion years to the first galaxies in the [[Hubble Ultra Deep Field]].
* It was able to help settle the [[age of the universe]] at about 13.7 billion years. Before the Hubble, scientists only knew it was between 10 and 20 billion years old.
* It took the first picture of a [[extrasolar planet|planet outside]] our [[Solar System|solar system]], and was able to find what type of atmosphere other planets might have.
== Replacement ==
Hubble has been replaced by the [[James Webb Space Telescope]] which is located even further from Earth. There are now other telescopes in orbit, like the [[Herschel Space Observatory]], the [[Spitzer Space Telescope]] and the [[Kepler (spacecraft)|Kepler Spacecraft]], which was specially made for finding Earth-like planets around other stars.<ref>{{cite web|title=Telescopes in Space|date=18 May 2009 |url=http://www.space.com/6717-bounty-space-telescopes-fuels-golden-age-astronomy.html|publisher=Space.com|accessdate=31 March 2013}}</ref>
== References ==
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{{authority control}}
[[Category:Space telescopes]]
[[Category:Spacecraft launched in the 1990s]]
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