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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 ...
Astronomy

Astronomers measure mass and distance of free-floating planet

Most planets spend their lives orbiting a star, but some are destined for exile. According to a study published in Science on Jan. 1, 2026, astronomers have successfully measured the mass and distance ...