The white dots in this image are not stars or galaxies. They’re black holes. Totalling 25,00
The white dots in this image are not stars or galaxies. They’re black holes. Totalling 25,000 such dots (swipe to see the full thing), astronomers have created the most detailed map of black holes at low radio frequencies to date, an achievement that took years and a Europe-sized radio telescope to compile. Find out more at the link in our bio @ScienceAlert: LOFAR/LOL Survey -- source link