The strange quark star may have formed from a lucky cosmic merger

The universe may contain extremely dense and exotic hypothetical cosmic objects known as exotic quark stars. As astrophysicists continue to debate the existence of quark stars, a team of physicists has found that the remnants of a neutron star merger observed in 2019 have just the right mass to be one of these exotic quark stars.

When the stars dieTheir cores are compressed to such incredible degrees that they become entirely new kinds of things. for example, When the sun finally flasheswill leave behind a white dwarf, a planet-sized ball of highly pressurized carbon and oxygen atoms. When even the largest stars explode in a catastrophe called eruptions supernovae, leaving behind neutron stars. These incredibly dense objects are only a few miles wide but can weigh a few times the mass of the Sun. As its name suggests, it is made almost entirely of pure neutrons, essentially making it atomic nuclei kilometers wide.