The detector would search for ripples in the fabric of space-time left in the spacecraft's wake.
Scientists have proposed another use for the world's largest gravitational wave observatory: scanning for the ripples in space-time left in the wake of gargantuan alien spaceships.
Gravitational waves ripple out when objects with mass move through space. Bigger objects — such as planets, neutron stars or black holes — produce more prominent gravitational waves. These space-time ripples were first directly detected in 2015, but since then, scientists have been getting better at spotting the waves as they lap at our cosmic shores. Now, new calculations published Dec. 5 to the preprint database arXiv suggest that the U.S.
Are spaceships of this scale and speed even possible? The researchers don't know, but they hope to squeeze down the ship size to more reasonable proportions as increasingly sensitive gravitational wave detectors, such as the European Space Agency's 2037 Laser Interferometer Space Antenna, are deployed.
"This is because the shape of the GW signal is entirely dependent on the trajectory of the object," they wrote in the paper."Thus, as a burst signal is detected, one can attempt to reason the qualities of the transportation mechanism present based on the shape of the GW signal."
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