Page 12 - Universe dictionary by Futura-Sciences

Alphabetical index

GNSS Global navigation satellite system: determination of the ...	Goddard Space Flight Center The Goddard Space Flight Center (GSFC) is one of the many ...
Gravitational assist Gravitational assist is a technique using the attraction of ...	Gravitational lens One of the first phenomena predicted by general relativity, ...
Greenwich meridian The Earth's meridian passing through Greenwich observatory. ...	Gregorian calendar The Gregorian calendar was introduced by pope Gregory XII in ...
Group of galaxies A concentration of galaxies held together by gravitation. ...	GSTP The General Support Technology Programwas initiated by the ...
Guiana Space Centre The Guiana Space Centre is the European Space Agency's ...	Hale-Bopp comet The Hale-Bopp comet was discovered on 23 July 1995 by two ...
Halley's comet This is undoubtedly the best known comet. In 1705, the ...	Hayabusa Developed by JAXA (the Japanese space agency), MUSES-C was ...
Heliocentric Heliocentric refers to a reference system with the Sun at its centre.	Heliopause The heliopause is the limit where the solar wind meets the ...
HELIOS HELIOS, the French military reconnaissance ...	HELIOS II HELIOS II operates in the visible and infrared spectra, ...
Heliosphere The heliosphere is the space bounding the heliopause ...	Helium Heium, which has the symbol He and atomic number 2, is the ...
Herschel satellite The Herschel satellite was launched on 14 May 2009 by an ...	HESS Inaugurated in September 2004 and installed in Namibia, the ...