Page 3 - Letter A - Universe dictionary by Futura-Sciences

Alphabetical index

Astrometric coordinates Astrometric coordinates are the right ascension and ...	Astrometric direction The astrometric direction is the direction joining the ...
Astronautics Astronautics is the science of space navigation.	Astronomical coordinates Astronomical coordinates are the polar coordinates of the ...
Astronomical unit (symbol: AU) The mean distance of the Earth from the Sun. ...	Astrophysics Astrophysics is the branch of astronomy dealing with the ...
Atlantis Atlantis was the American space shuttle built in 1984 and ...	Atlas V Atlas V is the latest in the family of launchers developed ...
Atmosphere The gaseous layer around certain planets. Without our ...	Attitude The attitude is the direction of the axes of a space vessel ...
ATV The ATV is an entirely automated unmanned cargo vessel. It ...	ATV-CC The ATV-CC (Automated Transfer Vehicle Control Centre) is a ...
Aura Aura is an Earth observation mission designed to study the ...	Aurora Aurora is a technological programme proposed by the ESA for ...
Autumn equinox The spring equinoxes (20, 21 or 22 March in the northern ...	Azimuth The azimuth is the angle measured positively towards the ...
Azimuth of a direction In a given place. One of the horizontal coordinates. The ...	Azimuthal mount A azimuthal mount is a telescope mount with two ...