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Detecting Gravitational Waves From the Early Universe
LIGO's incredible engineering project yes the most sensitive precise devices on the fact that humans can build something like that is truly awe-inspiring from an engineering perspective right. These gravitational waves from the early universe will probably be of a much longer wavelength than LIGO is capable of sensing so there's a beautiful project to put lasers in different locations in the solar system you know we really really separated by solar system scale differences like artificial planets or moons in different places and see the tiny motions of those relatives to one another as a signal of radiation Big Bang.