The innovative Fireball Recovery and Interplanetary Observation Network (FRIPON) is a collaboration between the Observatory of Paris
, National Center of Scientific Research (CNRS), University of Paris-South, French National Museum of Natural History, and Aix-Marseille University.
These minieclipses yield a planet's radius and, in combination with another technique, provide a trove of information, including the exact mass, density and composition of a body, notes Daniel Rouan of the Observatory of Paris
in Meudon, France.
To measure the field, Claude Catala of the Observatory of Paris
and his colleagues examined the polarization of light from the star using a device on the Canada-France-Hawaii Telescope on Hawaii's Manna Kea.
Team members Frederic Bournaud and Francoise Combes of the Observatory of Paris
say that they have identified the alleged hit-and-run galaxy.
Another team, led by Bruno Sicardy of the Observatory of Paris
, reports in the same journal that Pluto's atmospheric pressure doubled during that 14-year interval.
Using a smaller telescope near Arica in northern Chile, Francois Colas of the Observatory of Paris
and his colleagues also observed the July 20 occultation.