Page 22 - Universe dictionary by Futura-Sciences

Alphabetical index

Planetographic Coordinates Planetographic coordinates are coordinates used to map the ...	Planum On Mars, this term denotes a region with a high plateau or ...
Pleiades The Pleiades cluster is a group of stars in the ...	Pluto Pluto When it was discovered by Clyde Tombaugh in 1930, ...
Polar coordinates of a direction The polar coordinates of the direction referred to the true ...	Polar mount A polar mount is a two-axis telescope mount, one of the ...
Powder acceleration stage The powder acceleration stage works with two solid fuel ...	Precession Precession is a modification in the direction of the axis of ...
Precession constant The precession constant is a coefficient of time in the ...	Precession-nutation Precession-nutation is the displacement over time of the ...
Propellant A mixture of fuel components for the propulsion of rockets. ...	Proper motion of a star The proper motion of a star is the right ascension and ...
Proper time In relativistic mechanics, proper time is the time read on a ...	Proteus In 1996 the CNES decided to start the development of the ...
Protoplanetary disk The protoplanetary disk of a young star is the disk of gas ...	Pulsar A pulsar is a neutron star (a star at the end of its ...
Quaoar Discovered in 2002, Quaoar, of which the diameter is 1,250 ...	RADARSAT-1 RADARSAT-1 is a sophisticated Earth observation satellite ...
Radial velocity Radial velocity is the velocity of an object in the ...	Radiant The radiant is the spot on the celestial sphere from which ...