SI base unit by Ensign February 20, 2021 0 One of from which all the other SI units are derived. See SI derived unit.
Sidereal by Ensign February 20, 2021 0 Of, relating to, or concerned with the stars. Sidereal rotation is that measured with respect to the stars rather than ...
Sidereal Month by Ensign February 20, 2021 0 The average period of revolution of the Moon around the Earth in reference to a fixed star, equal to 27 ...
Sidereal Period by Ensign February 20, 2021 0 The period of revolution of a planet around the Sun or a satellite around its primary.
Sidereal Time by Ensign February 20, 2021 0 A measure of time by the stars, sidereal time marks the right ascension of stars on your local meridian at ...
Singularity by Ensign February 20, 2021 0 The center of a black hole, where the curvature of space time is maximal. At the singularity, the gravitational tides ...
SMC by Ensign February 20, 2021 0 Small Magellanic Cloud, the smaller of two small galaxies orbiting nearby our Milky Way galaxy, which are visible from the ...
