Page 2 - Letter S - Universe dictionary by Futura-Sciences

Alphabetical index

Small planet Small planets have diameters of less than 13,000 km (e.g. ...	SMART-1 SMART-1 is the first European mission to the Moon. Launched ...
SOFIA SOFIA (Stratospheric Observatory for Infrared Astronomy) is ...	SOHO The objective of the SOHO mission is to study the internal ...
Solar corona The solar corona is the outermost layer of the solar ...	Solar flare A solar flare is the sudden release of energy from the sun ...
Solar Orbiter ESA"s Solar Orbiter (SO) mission is planned for around ...	Solar sail A solar sail is a new type of space propulsion: the ...
Solar system All the bodies in the gravitational field of the Sun. The ...	Solar time Solar time is the hour angle of the centre of the Sun for a ...
Solar wind Interplanetary space is permanently swept by a wind of ...	Solstice The dates in the year (20 or 21 June, or 21 or 22 December) ...
Soyuz Soyuz is the name of a series of Russian space vessels used ...	Space elevator The space elevator is a more or less achievable project of ...
Spar On the wing of a plane, the spar is the beam that extends ...	Spectral classification Spectral classification is a system for classifying stars. ...
Spectroheliograph A spectroheliograph is a high resolution spectroscope used ...	SPICAV Spectroscopy for Investigation of Characteristics of the ...
Spiral galaxy A galaxy with spiral arms. There are two main types, those ...	Spirit Spirit was the first rover in the NASA MER mission (Mars ...