Letter S - Universe dictionary by Futura-Sciences

Alphabetical index

SALT The South African Large Telescope is the largest telescope ...	Saros Astronomers discovered that eclipses occur at regular ...
Satellite image Observation images of the surface of the Earth taken by a ...	Satellite orbit A satellite is an object placed in orbit around the Earth. ...
Saturn Like Jupiter, Saturn with its train of satellites is a ...	Saturn 5 Saturn 5 is the most powerful rocket ever built. Saturn 5 is ...
SCAR SCARs are installed on Ariane launchers and are small ...	Scramjet A scramjet is a ramjet engine with supersonic combustion ...
Sea Launch Sea Launch is a company that has a space rocket launch base, ...	Sedna Sedna is a planetoid, "the largest trans-Neptunian ...
Semi-major axis The semi-major axis is half of the major axis of an ellipse. ...	SETI SETI (Search for Extra-Terrestrial Intelligence) is a ...
Shenzhou Shenzhou: Shenzou is a Chinese space capsule built in ...	Shergottite Shergottites are rare meteorites, divided into two main ...
Shoemaker-Levy 9 Shoemaker-Levy 9 is a comet that looks like a 21 piece ...	Shoemaker-Levy 9 comet The Shoemaker-Levy 9 comet (SL9) made it possible to ...
Shooting star When a speck of cosmic dust enters the Earth's atmosphere, ...	Sidereal period The sidereal period is the time between two passages of an ...
Sidereal time Sidereal time is the hour angle of the equinox. Real ...	Siderite Siderites are metallic meteorites composed mainly of iron ...