sextant

related words
mhd
kinematics
anemometer
vernier
collimate
comoving
tachyon
radiometer
helium-4
stereographic
diffract
near-earth
helium-3
varf
lensing
graviton
geodesics
eigenstate
synodic
holography
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Sextant
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Robert Peary
Apollo 8
Compass
Dumfries, Virginia
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