3/17/2024 0 Comments Zetetic astronomy gravityThis is not because it strikes the Earth and imparts kinetic energy to it – like an ocean wave hitting land. The passing of a gravitational wave should stretch and contract the Earth. Such monitoring systems are currently in place on Earth, including LIGO, which has test masses separated by up to four kilometres – that separation distance being monitored by lasers designed to detect tiny changes in that distance, which might result from the passage of a gravitational wave initiated from a distant point in the universe. the decay of its orbit) can only be explained by an invisible loss of energy, which we presume to be the result of gravitational waves transporting energy away from the system.ĭirect observation of gravitational waves currently escapes us – but seems at least feasible by monitoring the alignment of widely separated test masses. Gravitational waves have been indirectly detected via observations of pulsar PSR 1913+16, a member of a binary system, the orbit of which decays at the rate of approximately three millimetres per orbit.
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