english: You can work it out on a piece of paper in a laboratory, get a telescope, swing it to the sky, and you find that there are no dead stars bigger than 1.4 times the mass of the Sun.
non_english: To možete da izvedete na komadu papira u laboratoriji, da zmete teleskop, uperite ga ka nebu i naći ćete da nema niti jedne mrtve zvezde sa masom većom od 1.4 mase sunca.