From mcnees@mastodon.social on Mastodon: Subrahmanyan Chandrasekhar was born # OTD in 1910. He established an upper limit on the mass of stable white dwarf stars, and made numerous contributions to astrophysics and relativity. Above the Chandrasekhar Limit – about 1.44 solar masses – stars eventually explode and then collapse into a neutron star or black hole. Photo: Stephen Lewellyn / AIP