general relativity

  • Hell Yeah, We’re Getting a Space-Based Gravitational Wave Observatory

    Hell Yeah, We’re Getting a Space-Based Gravitational Wave Observatory

    Stay calm, everybody stay calm. But it’s finally happening: The European Space Agency is committing itself to the Laser Interferometer Space Antenna (LISA), a gravitational wave observatory that will study some of the universe’s most enigmatic phenomena. On Thursday, LISA was formally adopted, meaning that ESA “recognises that the mission concept and technology are sufficiently…


  • Behold, Our Galaxy Visualised in Gravitational Waves

    Behold, Our Galaxy Visualised in Gravitational Waves

    No space-based gravitational wave observatory exists…yet. But that hasn’t stopped a team of astronomers from demonstrating how the gravitational universe might look, using simulated data to create a “synthetic gravitational sky.” Gravitational waves are perturbations in spacetime that were predicted by Einstein in his theory of general relativity; as Einstein described them, the waves are…