 Caraveo and her team are dedicated to studying the color, motions, and distances of neutron stars, along with the relationship between neutron stars and young supernova remnants.With the use of parallax with Geminga, Caraveo accomplished the first optical measurement of the distance to an isolated neutron star.The correlation of data from Hipparcos with images from the Hubble Space Telescope to determine the absolute position of the faint optical counterpart of Geminga, was chosen by the European Space Agency as one of the 30 success stories presented at the Ministerial Conference in May 1999 (see ESA BR 147).