 Caraveo's continuous improvement to the techniques of analysis of data from the Hubble Space Telescope allowed the measurement of the proper motion of the Crab pulsar and then proper motion and parallax of the pulsar in the constellation of Sails, yielding a result much closer than she had expected.In both cases there was a significant alignment between the direction of the proper motion vector and the X-ray jets revealed by these two neutron stars.This alignment has profound implications for the physics of the explosion of supernovae.