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Spacecraft and Orbit
Spacecraft and Orbit

Measuring 5 meters long and 1.6 meters in diameter, the fully integrated Gravity Probe B spacecraft was a remarkable example…

Key Technologies and Spinoffs
Key Technologies and Spinoffs

To turn Schiff’s idea into a reality, the Gravity Probe B team needed to invent and verify several new technologies…

Preparing for Launch
Preparing for Launch

The early decades of development saw most of the work in the areas of concept development, technology design, and prototype…

Team Members
Team Members

One of the most important aspects of Gravity Probe B (GP-B) was a process longtime Principle Investigator, Dr. Francis Everitt…

NASA astronauts Bob Behnken (foreground) and Doug Hurley
NASA astronauts Bob Behnken (foreground) and Doug Hurley

NASA astronauts Bob Behnken (foreground) and Doug Hurley are pictured briefing mission controllers.

NASA astronauts Doug Hurley (foreground) and Bob Behnken
NASA astronauts Doug Hurley (foreground) and Bob Behnken

NASA astronauts Doug Hurley (foreground) and Bob Behnken are pictured briefing mission controllers.

The “aurora australis” and a starry sky above the Indian Ocean
The “aurora australis” and a starry sky above the Indian Ocean

The "aurora australis" and a starry sky above the Indian Ocean

A wispy “aurora australis” intersects with the Earth’s airglow
A wispy “aurora australis” intersects with the Earth’s airglow

A wispy "aurora australis" intersects with the Earth's airglow.

Tropical Storm Cristobal nearing southeastern Louisiana
Tropical Storm Cristobal nearing southeastern Louisiana

Tropical Storm Cristobal nearing southeastern Louisiana.

A waning gibbous Moon is pictured just above the Earth’s horizon
A waning gibbous Moon is pictured just above the Earth’s horizon

A waning gibbous Moon is pictured just above the Earth's horizon.