galactic latitude
101ionosphere and magnetosphere — ▪ atmospheric science Introduction regions of Earth s (Earth) atmosphere in which the number of electrically charged particles ions (ion) and electrons (electron) are large enough to affect the propagation of radio waves (electromagnetic… …
102History of astronomy — History of science …
103International Space Station — ISS redirects here. For other uses, see ISS (disambiguation). International Space Station …
104Minute — This article is about the unit of time, angle and right ascension. For other uses of the word, see Minute (disambiguation). See also: Minute of arc A minute is a unit of measurement of time or of angle. The minute is a unit of time equal to… …
105Month — For the Egyptian hawk god, see Monthu. A month is a unit of time, used with calendars, which was first used and invented in Mesopotamia, as a natural period related to the motion of the Moon; month and Moon are cognates. The traditional concept… …
106Metonic cycle — Heliocentric Solar System In astronomy and calendar studies, the Metonic cycle or Enneadecaeteris (from Greek words for nineteen years) is a period of very close to 19 years which is remarkable for being very nearly a common multiple of the solar …
107Satellite — This article is about artificial satellites. For natural satellites, also known as moons, see Natural satellite. For other uses, see Satellite (disambiguation). An animation depicting the orbits of GPS satellites in medium Earth orbit …
108Spacetime — For other uses of this term, see Spacetime (disambiguation). Two dimensional analogy of spacetime distortion. Matter changes the geometry of spacetime, this (curved) geometry being interpreted as gravity. White lines do not represent the… …
109Tau Ceti — Starbox begin name=Tau Ceti Starbox image caption=Tau Ceti (highlighted center) in the southern part of the constellation Cetus. Starbox observe epoch=J2000 constell=Cetus ra=RA|01|44|04.0829cite web url=http://simbad3.u strasbg.fr/sim… …
110Time from NPL — Map showing the location of the Anthorn VLF transmitter within Cumbria …
