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...System on a [[hyperbolic trajectory]] due to a close approach to Jupiter. In the 43 years since its discovery only two objects with higher eccentricitie |date = 19 September 2019 ...

'''Antimatter comets''' and '''antimatter meteoroids''' are hypothetical [[comet]]s and [[meteor ...rved, Rojanski again suggested hypothesis of antimatter comets in a letter in ''[[Physical Review Letters]]'', and suggested that [[gamma-ray]] observati ...

{{Refimprove|date=June 2019}} ...e term is mostly used in the discovery and tracking of [[asteroids]] and [[comets]]. Arc length has the greatest influence on the accuracy of an orbital esti ...

...ription|Interstellar comet passing through the Solar System, discovered in 2019}} {{redirect|Comet Borisov|other comets discovered by Gennadiy Borisov|List of comets discovered by Gennadiy Borisov}} ...

{{Use dmy dates|date=September 2019}} The discovery was made using the {{convert|0.4|m|in|adj=on|sp=us}} [[reflecting telescope|reflector]] of the [[International Sc ...

...ov]] comet, the second confirmed interstellar object, photographed in late-2019 beside a distant galaxy]] ...teroid]]s and [[exocomet]]s<ref name="Valtonen" /><ref name="Francis" />). In the latter case, the object may be called an '''interstellar interloper'''. ...

{{Short description|Comet that had a close encounter with Mars in 2014}} {{For|other comets discovered by the Siding Spring Observatory|Comet Siding Spring (disambigua ...

...lFuture" >{{Cite journal|last = Mautner |first = Michael N. | title = Life in the cosmological future: Resources, biomass and populations | journal = Jo ...]]'' by [[Olaf Stapledon]], first published in 1930. It details the manner in which the last humans, upon discovering that the [[Solar System]] will soon ...

| caption = Peter Jalowiczor in his study (taken 2010) showing PCs set-up for the analysis of extrasolar pl ...ucted research confirming that <math>k=2</math> for the delta effect for [[comets]]. He has written four books – two about [[Association football|football]] ...

{{Use dmy dates|date=October 2019}} ...atch]] program at [[Kitt Peak National Observatory]] near Tucson, Arizona, in the United States.<ref name="MPC-object"/> ...

{{Use dmy dates|date=October 2019}} ...m the outer regions of the [[asteroid belt]], approximately 4.6 kilometers in diameter. ...

...cess-date=February 16, 2020 |people=[[Derek Muller]] }}</ref> and included in standard physics textbooks such as [[Classical Mechanics (Goldstein)|''Clas ...r to the handle (ê₂ in the diagram), and then catch the handle. In almost all cases, during that rotation the face will also have completed a ...

{{Short description|Interstellar object passed near Earth in 2017}} ...sive 4.2 meter diameter telescope is tracking the rapidly moving A/2017 U1 in the field of view. |url-status=live}}</ref>}} ...

...ement in March 2018, it was the third most distant observed natural object in the [[Solar System]], after [[Eris (dwarf planet)|Eris]] and {{mpl|2014 UZ| ...quires an [[observation arc]] of several years to refine the uncertainties in the approximately 700-year [[orbital period]] and determine whether it is c ...

.... The models of the Solar System throughout history were first represented in the early form of [[Cave painting|cave markings]] and drawings, [[calendar] ...previous models, thus, the early models are kept track of by intellectuals in astronomy, an extended progress from trying to perfect the [[Geocentric orb ...

{{Distinguish||text=the [[Planet X]] proposed in 1906 by [[Percival Lowell]]}} {{About|the hypothetical planet first suggested in 2014|the dwarf planet previously classified as the Solar System's ninth pla ...

...htest Stars |url=http://www.atlasoftheuniverse.com/stars.html |access-date=2019-01-17 |website=www.atlasoftheuniverse.com}}</ref> ...rg//data/object.php?id=21253&town=2643743 |access-date=2023-12-08 |website=In-The-Sky.org |language=en}}</ref> ...

...electron microscope]] (SEM) photo of a dust particle collected by [[NASA]] in the [[stratosphere]] together with its [[energy-dispersive X-ray spectrosco ...n in order to obtain information on the [[astronomical object]]s occurring in [[outer space]]. Dust astronomy overlaps with the fields of [[Planetary sci ...

{{Short description|Dwarf planet in the scattered-disc}} ...binowitz]] at the [[Palomar Observatory]], and the discovery was announced in January 2009. ...

...Comet or meteoroid streams, and even [[interstellar dust]] were identified in the data. ...elios orbit the spacecraft was in [[Conjunction (astronomy)|conjunction]] (in front or behind the Sun) and no data transmission was possible for a few we ...