🌋 Planetary event

First Hubble servicing mission (STS-61)

Primera misión de reparación del Hubble (STS-61)

Date
2-13 de diciembre de 1993 · confidence high
Place
Kennedy Space Center, Florida, United States
Credited to
NASA (Space Shuttle Endeavour crew)
Field
Movement

What was discovered

Seven astronauts installed the COSTAR corrective optics and a new camera on Hubble in five spacewalks, to compensate for a curvature error in the primary mirror. It turned a failure into the most productive telescope in history.

The spherical aberration (about 2 micrometres in the mirror) was detected weeks after the 1990 launch. The 2009 mission (STS-125) was the last servicing flight.

What it led to

  • the Hubble Deep Field images (1995)
  • four further servicing missions (1997-2009)
  • proof that observatories can be repaired and upgraded in orbit
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Sources✓ verified 2026-11-04