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 one of the most famous [[telescope]]s. It is the first optical [[space observatory]] telescope. Being above the [[atmosphere]] means it can see the [[sky]] more clearly than a telescope on the ground, because 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.
The Hubble itself is the size of a large school bus, but still small enough to fit inside the cargo bay of a [[Space Shuttle]]. It was repaired in
▲It actually observes less than 20% of the time. 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]]. It completes a full orbit of Earth every 97 minutes. That means 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]] to [[San Francisco]] in 10 minutes.
▲The Hubble itself is the size of a large school bus, but still small enough to fit inside the cargo bay of a [[Space Shuttle]]. It was repaired in [[1993]] due to problems in the picture quality.
== Launch ==
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== Repair ==
Another space shuttle was soon sent up to repair the space telescope. The repair was not easy. The astronauts had to install some small mirrors to correct the light from the big mirror. The big mirror could still be used. It took five days of [[space walk]]s. When an astronaut
Repairs and servicing missions have been made to the Hubble Space Telescope five times to keep it in orbit and make it even better as technology improved. The space shuttle program was kept going longer than planned to send an extra trip up to the Hubble Space Telescope for a final fix.
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== Accomplishments ==
[[File:Sombrero Galaxy in infrared light (Hubble Space Telescope and Spitzer Space Telescope).jpg|thumb|Sombrero Galaxy in infrared light (Hubble Space Telescope and Spitzer Space Telescope)]]
* Early on, in 1994, Hubble stared at what was thought to be an empty area of space for ten days.
* 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.
==
Hubble
== Other Websites==▼
*[http://www.nasa.gov/mission_pages/hubble/main/index.html NASA Hubble Site]▼
*[http://hubblesite.org/ HubbleSite (STSI)]▼
== References ==
{{reflist}}
▲*[http://www.nasa.gov/mission_pages/hubble/main/index.html NASA Hubble Site]
▲*[http://hubblesite.org/ HubbleSite (STSI)]
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[[Category:Space telescopes]]
[[Category:Spacecraft launched in the 1990s]]
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