Physicists have figured out how we might detect hypothetical boson stars. If we do, then this would count as a major step towards solving the riddle of dark matter,
On the fourth day of advent, we remember one of our most exciting cosmological events, watching the announcement of the detection of gravitational waves in 2016.
Gabriela González, former Spokesperson of LIGO, explains gravitational waves, what it was like to discover them, and what they might tell us about the Universe.