Q. Which space organization has developed first ever space-based quantum sensor for gravity measurements?
Answer: National Aeronautics and Space Administration (NASA)
Notes: The National Aeronautics and Space Administration (NASA) is developing the first-ever space-based quantum sensor to measure gravity with high precision. Scientists are working on a Quantum Gravity Gradiometer (QGG) to be placed onboard a satellite in low Earth orbit. The QGG can detect the smallest gravitational changes by measuring differences in acceleration as tiny as 10⁻¹⁵ meters per second squared over a distance of 1 meter. In this system, atoms are cooled to near absolute zero, turning them into wave-like states inside a vacuum. Lasers manipulate these atoms, causing a phase shift that reveals the strength of gravitational forces. This technology helps estimate the mass of large structures like the Himalayas and track the movement of water, ice, and rocks from space. The recent development marks a big step in using quantum sensing for environmental monitoring and Earth sciences.
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