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Robert F. Kennedy's Day of Affirmation Address (also known as the "Ripple of Hope" Speech [1]) is a speech given to National Union of South African Students members at the University of Cape Town, South Africa, on June 6, 1966, on the University's "Day of Reaffirmation of Academic and Human Freedom".
The Laser Interferometer Space Antenna (LISA) is a planned space probe to detect and accurately measure gravitational waves [2] —tiny ripples in the fabric of spacetime—from astronomical sources. [3] LISA will be the first dedicated space-based gravitational-wave observatory.
The system is currently expected to have a sensitivity to periodic spacetime strains of h ~ 2 × 10 −17 / √ Hz, with an expectation to reach a sensitivity of h ~ 2 × 10 −20 / √ Hz. The Chongqing University detector is planned to detect relic high-frequency gravitational waves with the predicted typical parameters ≈10 11 Hz (100 GHz ...
The blue lines are gravitational waves, ripples in time and space, which is how astronomers detected the merger, and orange and red areas indicate parts of the neutron star being stripped away.
Einstein predicted that when really heavy objects move through spacetime — the. Scientists have observed for the first time the faint ripples caused by the motion of black holes that are gently ...
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[12] [13] The waves given off by the cataclysmic merger of GW150914 reached Earth as a ripple in spacetime that changed the length of a 1,120 km LIGO effective span by a thousandth of the width of a proton, [11] proportionally equivalent to changing the distance to the nearest star outside the Solar System by one hair's width.
Slow motion computer simulation of the black hole binary system GW150914 as seen by a nearby observer, during 0.33 s of its final inspiral, merge, and ringdown.The star field behind the black holes is being heavily distorted and appears to rotate and move, due to extreme gravitational lensing, as spacetime itself is distorted and dragged around by the rotating black holes.