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The Space In-between: Aurora Australis
The Space In-between: Aurora Australis

Like a wisp of green smoke, the aurora australis seemingly intersects with the Earth's airglow as the International Space Station…

Telescope and Quartz Block
Telescope and Quartz Block

With gyroscopes communicating their spin direction to the SQUIDs, scientists still needed something to serve as a reference point for…

Dewar and Liquid Helium
Dewar and Liquid Helium

The task of keeping the experimental payload near the 1.8 degrees kelvin fell to a vacuum-jacketed device called a dewar.

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