planets earth like
Can we detect the presence of other planets gravity on earth?
I figure each planets gravity must play a part on each other in the universe while orbiting the Sun, but can the presence of, for example, Venus be detected here on earth as it nears us in its orbit of the Sun? Are there any instrument that have detected this?
Thanks!
I’m not sure if we have equipment capable of detecting it or not, but the pull from other planets is negligible. Gravity drops off fast with distance: basically, gravity = 1 / (distance squared). So even though the planets are more massive than the Moon, since they’re so much farther away, they don’t really pull on us. The total pull of gravity from all of them combined at their closest distance (basically, during a full planetary conjunction) adds up to a small fraction of the Moon’s pull.
HOME (English with subtitles)
