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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.
Historical Context
Kepler spacecraft launches
Kepler spacecraft launches
March 7, 2009

Kepler, NASA's first planet-hunting spacecraft, lifted off on a three-and-a-half-year mission to seek signs of other Earth-like planets.

The Kepler...

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NASA Mission: Kepler
Science Discovery
Quadruple Saturn moon transit
Quadruple Saturn moon transit
Release date: March 17, 2009

Saturn's comparatively paper-thin rings are tilted edge-on to Earth every 15 years. Because the orbits of Saturn's major satellites are in the ring plane,...

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HubbleSite press release
Mission Event
Servicing Mission 4 (STS-125)
Servicing Mission 4 (STS-125)
May 11-24, 2009

Hubble gets its final servicing mission. Astronauts install two new instruments, the Wide Field Camera 3 (WFC3) and the Cosmic Origins Spectrograph (COS),...

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NASA Space Shuttle Atlantis Mission STS-125: Hubble Servicing Mission 4
Science Discovery
Hubble captures a rare Jupiter collision
Hubble captures a rare Jupiter collision
Release date: July 24, 2009

A new expanding spot on Jupiter, caused by a rare impact of a comet or asteroid, is observed with Hubble's new camera, WFC3. NASA scientists interrupted the...

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HubbleSite press release
Milestone Release
Post-SM4 Early Release Observation
Post-SM4 Early Release Observation
Release date: September 9, 2009

Astronomers issue the first images taken with the newly installed Wide Field Camera 3 (WFC3). The stunning photos are of a gaseous shroud around a dying...

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HubbleSite press release
Significant Image
Planetary nebula NGC 6302
Planetary nebula NGC 6302
Release date: September 9, 2009

What resemble dainty butterfly wings are actually roiling cauldrons of gas heated to more than 36,000 degrees Fahrenheit. The gas is tearing across space at...

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HubbleSite press release
Significant Image
Galactic wreckage in Stephan's Quintet
Galactic wreckage in Stephan's Quintet
Release date: September 9, 2009

Stephan's Quintet is a group of five galaxies located in the constellation Pegasus. The name, however, is a bit of a misnomer. Studies have shown that group...

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HubbleSite press release
Significant Image
Gravitational lensing in galaxy cluster Abell 370
Gravitational lensing in galaxy cluster Abell 370
Release date: September 9, 2009

Abell 370 is one of the very first galaxy clusters in which astronomers observed the phenomenon of gravitational lensing, where the warping of space by the...

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HubbleSite press release
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