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About Hubble History
Frequently Asked Questions
Glossary
Further Information

Timeline

This is an approximate timeline for the mission. As the launch date approaches and the mission evolves, some revisions may occur.

Day 1

The Shuttle will carry a full crew of seven astronauts, including several veterans. Once in orbit, the team will check the Shuttle's robotic arm in preparation for the capture of Hubble.

launch

Day 2 & 3

As the Shuttle continues to close-in on Hubble, the crew will perform tasks to ensure there was no damage during launch. The astronauts will begin their preparations by checking various elements such as the airlocks and spacesuits. Finally, the Shuttle will rendezvous with Hubble and capture it via the robotic arm.

Approaching HST

Day 4

The first EVA will see the installation of the new WFC3 camera in the slot currently occupied by WFPC2. In addition, the first set of upgraded batteries will be installed.

WFC3

Day 5

Three Rate Sensor Units (RSU) housing six gyroscopes (2 gyros per unit) will be replaced, followed by one of the two battery modules.

Gyro Unit

Day 6

The Cosmic Origins Spectrograph (COS) will be moved into the slot currently housed by COSTAR. Repair of the Advanced Camera for Surveys (ACS) will start.

COS

Day 7

Repair of the Space Telescope Imaging Spectrograph (STIS). Three of the telescope bays will be outfitted with the New Outer Blanket Layers (NOBLs), keeping vital instruments at suitable temperatures for the rest of the telescope's life.

STIS

Day 8 - EVA 5

Replacing one of the three Fine Guidance Sensors (FGS) used to lock and track astronomical targets. Complete repair of the Advanced Camera for Surveys (ACS).

FGS

Days 9-12

Release of Hubble and preparation of Space Shuttle for return to the Kennedy Space Center.

Landing