Watson and his colleagues suspected that, if heavier elements did form during GW170817, signatures of those elements might be detected in the explosive aftermath of the merger, known as a kilonova.

The total body mass of VEGF can be evaluated using the above data, the body mass of a 30–39-year-old male (78 kg), the volume of blood (5 l) and the density of blood (1060 kg m −3).

Now, by analyzing the chemical composition of 42 ancient stars in the Milky Way, researchers show that the stars produced elements with atomic masses larger than 260, heavier than any element ...