Illustration of Neutron star

1933 Neutron star

The book of science

Tom Sharp

Walter Baade, Fritz Zwicky astrophysics Illustration of Neutron star

Neutron star

In 1572, Tycho Brahe saw a supernova. In 1933, Baade and Zwicky explained that such an event could be the collapse and explosion of a massive star that leaves a dense spinning core of neutrons.

Neutron stars

It could become a pulsar. It could become a magnetar. It could become a protoneutron, quark, electoweak, or preon star. It could become an X-ray binary pulsar or a radio-quiet supernova remnant.


The spinning of a neutron star, some say, is more accurate than a quartz watch; however, glitches can occur that speed it up or slow it down. A love even as true as that may sometimes settle into something finer.