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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 04 December 1998:

STANFORD HIGHLIGHT
Probe C windows #1 and #2 (and the associated baffles) were successfully installed into Probe C. Photo 1: Probe C on delivery/Photo 2: Probe C

SPACE VEHICLE HIGHLIGHT
All three Relativity Mission solar array substrate coefficient of thermal expansion (CTE) coupons are in house. These composite honeycomb structures are composed of an aluminum core and graphite/epoxy face sheets. The panels are designed to have very low CTE to minimize the effect of thermal distortions on the science experiment. The first coupon has been successfully tested in building 251. Photo: LMMS engineer Tim Ho with the test set used to measure solar array panel coefficient of thermal expansion.

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