ESA European Space Agency
The American Association of Variable Star Observers
Goddard Space Flight Center
Hubble Space Telescope
IAU: International Astronomical Union
IDA: International Dark-Sky Association
Jet Propulsion Laboratory, Pasadena
Nasa SpaceLink
Società Astronomica Italiana
Students for the Exploration and Development of Space, Arizona
The Planetary Society
UAI Unione Astrofili Italiani