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A chronology of the Hubble Space Telescope Illustrates the mission's history from conception through its 25 years of ground-breaking observations and discoveries.
Significant Image
Orion Nebula
Orion Nebula
Release date: January 11, 2006

This dramatic image offers a peek inside a cavern of roiling dust and gas where thousands of stars are forming. More than 3,000 stars of various sizes appear...

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HubbleSite press release
Historical Context
New Horizons launch to Pluto
New Horizons launch to Pluto
January 19, 2006

New Horizons launched on an Atlas V 551 booster with a Star 48B third stage directly into an interplanetary trajectory.

The mission is designed to fly by...

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NASA Mission: New Horizons
Science Discovery
Hubble finds 'tenth planet' is slightly larger than Pluto
Hubble finds 'tenth planet' is slightly larger than Pluto
Release date: April 11, 2006

Though previous ground-based observations suggested that Xena was about 30 percent greater in diameter than Pluto, Hubble observations yield a diameter of...

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HubbleSite press release
Science Discovery
Direct proof of dark matter
Direct proof of dark matter
Release date: August 21, 2006

In this image of a galaxy cluster formed after the collision of two large clusters, the blue areas depict where astronomers find most of the mass in the...

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HubbleSite press release
Historical Context
NASA scientist shares Nobel Prize for Physics
NASA scientist shares Nobel Prize for Physics
October 3, 2006

Dr. John C. Mather of NASA's Goddard Space Flight Center has won the 2006 Nobel Prize for Physics, awarded by the Royal Swedish Academy of Sciences. Mather...

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Nasa press release
Significant Image
Super star clusters in the Antennae Galaxies
Super star clusters in the Antennae Galaxies
Release date: October 16, 2006

The two spiral galaxies started to interact a few hundred million years ago, making the Antennae galaxies one of the nearest and youngest examples of a pair...

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HubbleSite press release
Mission Event
Servicing Mission 4 is reinstated
Servicing Mission 4 is reinstated
October 31, 2006

NASA Administrator Michael Griffin reinstates Hubble Servicing Mission 4.

IMAGE: (From left to right) Mission Specialist Michael Massimino, Mission...

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NASA Approves Mission
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