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{{Short description|Unit of measurement in astronomy}} ...6N | s2cid=18865066 }} in The Astrophysical Journal, 713, p. 816</ref> and in practice, this is the observable characteristic defining one zodi. ...

...pixel in the 'Full resolution' image (2,876 × 2,068 pixels)) and the orbit of Earth (grey), Jupiter (red) and Neptune (blue). From left to right: The Pis ...al period]] of a small body orbiting a central mass. Based upon the length of the year, the distance from the Earth to the Sun (an [[astronomical unit]] ...

{{Short description|A measure for the size of planets and other Solar System objects}} {{Redirect|Mean diameter (astronomy)|other uses|Diameter (disambiguation)}} ...

{{Distinguish|Level of measurement}} {{Redirect|Unit of measure}} ...

{{Short description|Hypothetical conflict with the laws of physics as currently known}} ...nt of the time or location of the experiment. The constancy (immutability) of any "physical constant" is thus subject to experimental verification. ...

{{short description|Ways in which length, distance or range can be measured}} {{broader|Dimensional measurement}} ...

{{Short description|Organic compounds of the form HC≡C–C≡C–…–C≡N}} [[File:Cyanoacetylene.png|thumb|right|Chemical structure of [[cyanoacetylene]], the simplest cyanopolyyne]] ...

{{Short description|Change in the apparent position of celestial bodies when seen from two different positions}} ...tic model. A similar diagram can be drawn for a star except that the angle of parallax would be minuscule.]] ...

{{Short description|Turbulence that concerns the regimes of magnetofluid flow at high Reynolds number}} '''Magnetohydrodynamic turbulence''' concerns the chaotic regimes of [[magnetofluid]] [[fluid flow|flow]] at high [[Reynolds number]]. [[Magneto ...

...nd gravitational force between the two components, and hence on the masses of the components. [[File:orbit2.gif|frame|Two bodies orbiting a common center of mass, indicated by the red plus. The larger body has a higher mass, and the ...

{{Short description|Subatomic particle emitted by radioactive elements in the Earth}} ...bining geoneutrinos from natural [[Uranium-238]] and [[Thorium-232]] decay in the Earth’s crust and mantle as well as manmade reactor-v̄_e emit ...

...the ''A'' and ''B'' signals indicate both the occurrence of and direction of movement. Many incremental encoders have an additional output signal, typic ...der#Incremental encoder interface|incremental encoder interface]]'', which in turn will "track" and report the encoder's absolute position. ...

{{short description|Problem of finding unknown lengths and angles of a triangle}} ...sphere]]. Applications requiring triangle solutions include [[geodesy]], [[astronomy]], [[construction]], and [[navigation]]. ...

{{short description|Period of time for the ecliptic longitude of the Sun to increase 360°}} ...x, or from [[summer solstice]] to the next summer solstice. It is the type of year used by [[Solar calendar#Tropical solar calendars|tropical solar calen ...

...Micrometeoroid analyzer. The hatched areas indicate the respective [[field of view]].]] ...Comet or meteoroid streams, and even [[interstellar dust]] were identified in the data. ...

{{Short description|SI derived unit of power}} {{About|the unit of power}} ...

{{Short description|Fundamental quantity in physics}} | otherunits = see [[unit of time]] ...

{{short description|1676 demonstration of light's finite speed by Danish astronomer Ole Rømer}} ...ment official in his native [[Denmark]] after his discovery of the [[speed of light]] (1676). The engraving is probably posthumous.]] ...

...(temperature) is treated as a common noun, capitalized in TITLES and start of a sentence --> {{Short description|SI unit of temperature}} ...

{{Short description|Detail of the global positioning system}} ...ite NASA art-iif.jpg|thumb|Artist's conception of GPS Block II-F satellite in orbit]] ...