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INTERFEROMETRY
A technique using laser beams to measure tiny distortions in spacetime caused by gravitational waves.

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VIRGO DETECTOR
A European gravitational-wave observatory working alongside LIGO.

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LIGO (LASER INTERFEROMETER GRAVITATIONAL-WAVE OBSERVATORY)
A major facility detecting gravitational waves using laser interferometry.

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GENERAL RELATIVITY
Einstein’s theory predicting gravitational waves as disturbances traveling at the speed of light.

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GRAVITATIONAL WAVES
Ripples in spacetime caused by accelerating massive objects, such as merging black holes or neutron stars.

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Gravitational Waves in Astronomy

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DEEP SPACE OBSERVATORIES
Telescopes placed far from Earth to minimize interference.

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ORBITAL DECAY
The gradual lowering of a satellite’s orbit due to atmospheric drag.

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LAGRANGE POINTS
Stable locations where space telescopes can remain in orbit with minimal fuel.

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ASTROSAT
India’s first dedicated space observatory.