Simulation of the gravitational waves at GW190521. (Image: LIGO / Virgo)
Astronomers have already tracked dozens of black hole mergers via gravitational waves, but...
The Paranal Observatory in Chile: Climate change can affect astronomical observations. (Image: ESO / S. Brunier)
You're not looking at the universe for once...
Artist's impression of a gamma-ray burst (Image: Superbossa.com, Alice Donini / MAGIC Collaboration)
The speed of light is constant, according to Einstein's theory of relativity....
Afterglow of the gamma ray burst GRB181123B (circle) (Image: Travis Rector / University of Alaska Anchorage), Mahdi Zamani and Davide de Martin)
Gamma ray bursts...
Illustration of the phoenix star stream (Image: Geraint F. Lewis / S5 Collaboration)
The fringes of the Milky Way also include numerous globular clusters -...
Spatial curvature in the triple system PSR J0337 + 1715 (Image: Michael Kramer / MPIfR)
According to Einstein's general theory of relativity, gravitation has the...
