Page 28 - Universe dictionary by Futura-Sciences

Alphabetical index

Time origin In 1984 the time origin was set to 1 January 2000 at 12h00 ...	Titan Titan (or Saturn VI) was discovered by Huygens in 1655. Its ...
Titan 3 Commercial The Titan 3 "commercial" rocket evolved from the ...	Titania A satellite of Uranus. Titania (Uranus III) was discovered ...
Topex-Poseidon The Franco-American Topex-Poseidon satellite was launched by ...	Topocentric The term topocentric refers to a reference system centred on ...
Torino scale The Torino scale was introduced by Richard Binzel, who has ...	Total eclipse A total eclipse occurs when the Moon masks the Sun ...
Transit A transit is the passage of one of the inner planets across ...	Triton Triton (Neptune I) is Neptune's first satellite, by far the ...
Tropical period The tropical period is the time between two passages of an ...	Tropical year A tropical year is the time interval between two passages of ...
Tropopause The tropopause is a thin layer in the Earth's atmosphere ...	True anomaly In Keplerian elliptical motion a true anomaly is the angle ...
True celestial equator The true celestial equator is a great circle on the ...	True coordinates True coordinates are coordinates relative to the equinox at ...
Twilight Twilight is the light before sunrise or after sunset. There ...	Type III star population Type III population stars were the first very massive ...
Ulysses The ULYSSES probe is a joint ESA and NASA mission, devoted ...	Umbriel A satellite of Uranus. Umbriel (Uranus II) was discovered by ...