Ok, as I understand it we have no way to determine the speed which we are moving at in an absolute sense.<BR><BR>We can say "We are moving 20 miles per hour in the car relative to the road" or "The ...
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How can scientists measure the mass of dangerous asteroids? New spacecraft method proposed
New spacecraft techniques propose using CubeSats, laser rangefinding, and precise Doppler measurements to determine the mass of potentially hazardous asteroids during flyby missions.
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