Dec 7 1960
From The Space Library
DISCOVERER XVIII launched into polar orbit by new Thor-Agena B from Vandenberg AFB, carrying surveillance-system equipment and human tissue in recovery capsule.
X-15 (No. 2) flown on final contractor's test flight by A. Scott Crossfield, making two midair engine shutdowns and restarts.
December 7-16: Series of upper atmosphere sounding rockets from NASA Wallops Station, sodium vapor being ejected at about 212 miles altitude and a lithium flare released near peak altitude of about 450 miles to measure wind velocities and temperatures.
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