Tag
#spacetime
2 posts
Unveiling the Universe's Ripples: How LIGO Detects Elusive Gravitational Waves
Explore how the Laser Interferometer Gravitational-Wave Observatory (LIGO) directly detects gravitational waves, unveiling cosmic events like black hole mergers and opening a new era in astronomy.
Warp Drives, Alcubierre Metrics, and the Physics of Faster-Than-Light Travel
In 1994, physicist Miguel Alcubierre published a paper showing that general relativity does not, in principle, forbid faster-than-light travel — it just requires something that may not exist: exotic matter with negative energy density. The warp drive is real physics, and the story of whether it is possible is one of the strangest in science.