Einstein's Theory of General Relativity Just Passed Its Most Precise Test Ever — Using a Disco Ball in Orbit
Scientists used a shiny, spherical satellite — informally described as an orbiting disco ball — to conduct the most precise test of Einstein's theory of general relativity to date. The experiment measured how Earth's mass distorts the fabric of space-time, confirming Einstein's predictions with greater accuracy than ever before. The Earth, while not enormously massive, still bends space-time enough to be precisely measured.
Why It Matters
General relativity underpins technologies like GPS, which billions of people use daily. More precise confirmation of the theory helps scientists trust the foundations of modern physics and pushes the boundaries of what we can measure.
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