From March 21 to April 11, 1993 the Galileo, Mars Observer and Ulysses spacecraft were tracked in a coincidence experiment, searching for low-frequency (milihertz gravitational radiation.

The Galileo spacecraft is now on its three-year direct Earth-to-Jupiter transfer trajectory.

Gelileo Galilei left a rich scientific legacy that enabled Cassini, Huygens and other scientists to continue to open the modern era of planetary explorations. The legacy relationship also applies to the spacecraft and ...

Gamma rays are high energy electromagnetic radiation with energies typically starting from a few tens of keV and extending to beyond TeV energies. Although gamma rays, like other electromagnectic radiation, can be characterized ...