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Gravity Probe B Relativity Test Spacecraft

NASA’s Gravity Probe B spacecraft was an Earth-orbiting relativity experiment launched in 2004 to measure geodetic and frame-dragging effects predicted by Einstein’s general theory of relativity using four precision gyroscopes.

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Identity

Family Name
Gravity Probe B
Full Name
Gravity Probe B Relativity Test Spacecraft
Roles
orbitertechnology_demonstratorresearch
Status
retired
Type
spacecraft

Details

Description
NASA’s Gravity Probe B spacecraft was an Earth-orbiting relativity experiment launched in 2004 to measure geodetic and frame-dragging effects predicted by Einstein’s general theory of relativity using four precision gyroscopes.
First Flight Year
2,004

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Creation Time
August 13, 2026 at 21:10:08 UTC
Updated Time
August 13, 2026 at 21:10:08 UTC