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...enin20111025.html (Backup link)]</ref> Comet Elenin started disintegrating in August 2011,<ref name="UT2011-08"/> and as of mid-October 2011 was not visi ...] (expanding tenuous dust atmosphere) estimated to be about 80,000&nbsp;km in diameter.<ref name="Coma-April">{{cite web ...

...his uncle was [[Lorenzo Milani|Don Lorenzo Milani]]. In 1970 he graduated in Mathematics at the [[University of Milan]] and later he studied at the [[Sc ...per un malore improvviso"|date = December 2018}}</ref> causing a deep loss in the scientific community.<ref>{{Cite web|url=https://www.esa.int/Our_Activi ...

| image = Comet ISON (C-2012 S1) by TRAPPIST on 2013-11-15.jpg | name = C/2012 S1 (ISON) ...

...e of the 2009 impact mark captured by [[NASA Infrared Telescope Facility]] in [[Mauna Kea]], [[Hawaii]]]] ...bervatories.JPG|thumb|[[W. M. Keck Observatory|Keck Observatory]] (the two in the middle) and [[NASA Infrared Telescope Facility]] (right) at [[Mauna Kea ...

{{synthesis|date=June 2012}} ...name="Mautner-2005">{{Citation |last=Mautner |first=Michael N. |title=Life in the Cosmological Future: Resources, Biomass and Populations |journal=[[Jour ...

{{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 ...

...The inclination of Planet Nine's orbit weakens this protection, resulting in a chaotic variation of semi-major axes as objects hop between resonances. T ...nge:circulating. Crossing orbits above black line.{{efn-ua|Similar figures in articles by Beust<ref name="Beust_2016" /> and Batygin and Morbidelli<ref n ...

...here]]s to the evolution of [[Galaxy|galaxies]]. From 2010 until his death in late 2015 he was an [[emeritus]] professor of [[astronomy]] at the [[Univer ...ies. In 1964 Spinrad was invited to return to Berkeley as a professor, and in 1968 he received tenure.<ref name="oral_history"/><ref name="berkeley_astro ...

...2I/Borisov]] 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'''. ...

...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]] ...

...doctoral degree at the [[Heidelberg University]] in Germany with a thesis in [[celestial mechanics]] written under the direction of [[Willi Jäger]].<ref ...[[University of Bucharest]], Romania (1998), [[University of Pernambuco]] in Recife, Brazil (1999), and the [[Bernoulli Center]] at [[École Polytechniqu ...

| caption = Solem in September 2014 ...Laboratory]]. Solem has authored or co-authored over 185 technical papers in many different scientific fields.<ref>{{cite web |title= Google Scholar - J ...

...of the [[Amor asteroid|Amor group]] of asteroids, approximately 900 meters in diameter. It [[minor-planet moon]] has an estimated diameter of 270 meters. ...me="jpldata" /> A first [[precovery]] was taken at [[Palomar Observatory]] in 1978, extending the body's [[observation arc]] by 20 years prior to its off ...

...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 ...

...atch]] program at [[Kitt Peak National Observatory]] near Tucson, Arizona, in the United States.<ref name="MPC-object"/> ...ars and detected a favourable [[Yarkovsky effect]], which ruled out impact in 2185.<ref name="DelVigna2019"/> Using observations from 16 November 2020, t ...

{{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>}} ...

{{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 ...

...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 ...