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{{Short description|Variance in a celestial body's axis of rotation over time}} ...//archive.org/details/131123ExplanatorySupplementAstronomicalAlmanac |date=1992 |publisher=University Science Books |isbn=0-935702-68-7}}</ref> ...

...idth]], W_λ, of a spectral line and the continuum luminosity, L, in broad UV optical emission lines. This means that the ratio of brightness of ...ffect was discovered in observations of high-[[redshift]] quasars reported in 1977, and has been commonly named after the discoverer<ref name = PoggePete ...

{{Short description|Red supergiant star in the Large Magellanic Cloud}} |caption=The supergiant IRAS 05280–6910 in the open cluster [[NGC 1984]]. It is the bright reddened object near the ce ...

{{Short description|Variable star in the constellation Scutum}} ...pulsating variable]] known as an [[RV Tauri variable]]. It was discovered in 1795 by [[Edward Pigott]] at a time when only a few [[variable star]]s were ...

| discovered = 3 August 1998 | aphelion = 2.8048 [[Astronomical unit|AU]] ...

...[Ellis R. Lippincott Award]] {{small|(1998)}}<br/>[[E. Bright Wilson Award in Spectroscopy]] {{small|(2002)}}<br/>[[Davy Medal]] {{small|(2004)}} ...is a Japanese-American [[spectroscopist]] and [[astronomer]] specializing in the field of [[galactic astronomy]], known as a pioneer of [[astrochemistry ...

...tar]] or [[exoplanet]]) in a single-lined spectroscopic [[binary star]] or in a [[planetary system]]. It can be calculated from [[Observation|observable] ...f> However, the true orbital velocity is often unknown, because velocities in the plane of the sky are much more difficult to determine than velocities a ...

...body]] of the [[Solar System]] – thus completing a full cycle of [[season|astronomical season]]s. For example, it is the time from [[March equinox|vernal equinox] ...around the Sun as measured with respect to the [[fixed stars]], resulting in a duration of 20 [[minute (time)|minute]]s longer than the tropical year, b ...

{{short description|Astronomical object not gravitationally bound to a star}} ...2I/Borisov]] comet, the second confirmed interstellar object, photographed in late-2019 beside a distant galaxy]] ...

{{Short description|Binary brown dwarf system in the constellation Vela}} | image = [[File:Two Brown Dwarfs in Our Backyard.jpg|330px|alt=Luhman 16]] ...

...ly form of [[Cave painting|cave markings]] and drawings, [[calendar]]s and astronomical symbols. Then books and written records became the main source of informati ...previous models, thus, the early models are kept track of by intellectuals in astronomy, an extended progress from trying to perfect the [[Geocentric orb ...

...close to what a human eye would have seen, and is caused by layers of haze in the atmosphere ...face pressure of the atmosphere of Pluto, measured by ''[[New Horizons]]'' in 2015, is about {{nobr|1 [[Pascal (unit)|Pa]]}} ({{nobr|10 μ[[Bar (unit)|bar ...

...Poisson]]. The process itself was discovered independently and repeatedly in several settings, including experiments on [[radioactive decay]], telephone ...s, Volume II- Applications'', volume 4, No 1–2 of ''Foundations and Trends in Networking''. NoW Publishers, 2009.</ref><ref name="Haenggi2009">M. Haenggi ...

...ts z~10.4-13.2. The most distant galaxies at z=13.20 and z=12.63 are newly discovered by JADES NIRCam imaging, while the z=10.38 and z=11.58 galaxies confirm pre ...astronomical objects discovered and verified so far, and the time periods in which they were so classified. ...

...[[Ptolemy's table of chords|calculation of chords]], while mathematicians in India created the earliest-known tables of values for trigonometric ratios Throughout history, trigonometry has been applied in areas such as [[geodesy]], [[surveying]], [[celestial mechanics]], and [[na ...

{{Infobox astronomical event ...en inferred only indirectly, via their effect on the timing of [[pulsars]] in [[binary star]] systems. The [[waveform]], detected by both LIGO observator ...

...om/mnras/article/527/4/11521/7511973 |journal=Monthly Notices of the Royal Astronomical Society |volume=527 |issue=4 |pages=11521–11538 |doi=10.1093/mnras/stad3761 | discovered = 23 September 1846 ...

This is a '''list of notable Italian scientists''' organized by the era in which they were active. ...0&nbsp;BC–460&nbsp;BC), İtalian-Greek philosopher, defender of rationalism in philosophy ...

{{Short description|Problem in physics and celestial mechanics}} {{About|the problem in classical mechanics|the problem in quantum mechanics|Many-body problem|engineering problems and simulations in ...

...|Reaka-Kudla|Wilson|Wilson|1997|pp=132–33}} In turn, technology may result in the [[extinction of humanity]], leaving the planet to gradually return to a ..., Earth's axial tilt may begin to undergo chaotic variations, with changes in the axial tilt of up to 90°.<ref name=aaa318/> ...