Romance of Neutron Star - Die-cut Transparent Sticker

In 1936, Oppenheimer theorized the upper mass limit of neutron stars relative to the Sun's mass. Neutron stars exceeding this mass limit would collapse into black holes due to their own gravity. This theory is known as the Oppenheimer limit (TOV limit). How intimately are Oppenheimer and the theories of neutron stars and black holes connected? Piecing together fragmented moments of Oppenheimer and neutron stars in my mind, this illustration came into being. Perhaps it was all arranged by the neutron stars themselves.