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popularmechanics.com • Physics • World
Theoretical physicist Ronald Mallett's lifelong quest to build a time machine, inspired by Einstein's theory of relativity and the concept of time dilation, is explored in detail.
nytimes.com • Physics • World
The Laser Interferometer Gravitational-Wave Observatory (LIGO) celebrates its 10th anniversary, marking a decade of groundbreaking discoveries about black holes and gravitational waves.