These slight pulls cause regular variations in the planets' orbits, affecting the timing of their transits.
If there is intelligent life out there, maybe it is looking for signs of life on Earth from such transits.
Fortunately, there are other ways to find planets than by detecting transits (the passage of a planetary body across a sun), as Kepler does.
He realised that some of the off-the-shelf equipment used by serious amateurs is sensitive enough to measure the light drop caused by distant transits.
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After it has been fished from the sea and before it turns up on a sashimi platter, most of Tokyo's seafood transits through the market.
Kepler needs to witness three of these "transits" to detect a planet, so its early discoveries were tilted toward close-orbiting worlds (which transit more frequently).
These hot transits are those of planets in other solar systems.
Around 2.2 million Transits have been made in Southampton since 1972 while the first vehicle, the Model AA truck, rolled off the Dagenham production line in October 1931.
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"We will continue to closely monitor transits through the area to ensure the safety of the communities as well as the towing vessels and their crews, " Coast Guard Capt.
His handwritten field notes show street by street calculations in "chain lengths, " a painstaking process that used metal chains and heavy brass compasses, theodolytes and geodesic transits to reconcile the difference between true north and magnetic north readings.
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