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== Anomalije i neslaganja ==
 
Postoje izvesna opažanja koja nisu adekvatno objašnjena, što može da ukazuje na potrebu za boljim teorijama ili možda drugačijim pristupima objašnjavanju.
There are some observations that are not adequately accounted for, which may point to the need for better theories of gravity or perhaps be explained in other ways.
 
[[File:GalacticRotation2.svg|frame|right|RotationKriva curverotacije oftipične aspiralne typical spiral galaxygalaksije: predictedpredviđena ('''A''') andi observeduočena ('''B'''). TheRaskorak discrepancyizmeđu betweenovih thekrivih curvesse is attributed topripisuje [[darktamna materija|tamnoj mattermateriji]].]]
 
* '''Prebrze zvezde''': Zvezde u galaksijama slede [[Kriva rotacije galakcije|distribuciju brzina]], pri čemu se zvezde na periferiji kreću brže nego što bi kretale kad sledele uočenu distribuciju normalne materije. Galaksieje unutar [[Metagalaksija|galaktičkih klastera]] ispoljavaju isti obrazac. [[Tamna materija]], koja bi formirala gravitacione interakcije ali ne i elektromagnetne, bi mogla da objasni ovaj raskorak. Razne [[Modifikovana Njutnova dinamika|modifikacije Njutnove dinamike]] su takođe bile predložene.
* '''Extra-fast stars''': Stars in galaxies follow a [[Galaxy rotation curve|distribution of velocities]] where stars on the outskirts are moving faster than they should according to the observed distributions of normal matter. Galaxies within [[Galaxy groups and clusters|galaxy clusters]] show a similar pattern. [[Dark matter]], which would interact gravitationally but not electromagnetically, would account for the discrepancy. Various [[Modified Newtonian dynamics|modifications to Newtonian dynamics]] have also been proposed.
 
* '''[[Anomalija preletanja]]''': Razne svemirske letilice su iskusile veća ubrzanja od očekivanih tokom [[Gravitacionai manuvar|gravitacijom potpomognutih]] manuvara.
* '''[[Flyby anomaly]]''': Various spacecraft have experienced greater acceleration than expected during [[gravity assist]] maneuvers.
 
* '''AcceleratingUbrzavajuća expansionekspanzija''': ThePostoje [[metricindikacije expansionda ofdolazi space]]do seemsubrzavanja to[[metrička beekspanzija speedingprostora|metričke upekspanzije prostora]]. Postojanje [[DarkTamna energija|tamne energyenergije]] hasje beenpredloženo proposedkao tomoguće explain thisobjašnjenje. ANedavno recentje alternativeizneseno explanationalternativno isobjašnjenje, thatpo thekome geometrygeometrija ofprostora spacenije is not homogeneoushomogena (dueusled topostojanja clustersklastera of galaxiesgalaksija), and that whente thekad datase arepodaci reinterpretedreinterpretiraju touzimajući taketaj thisfaktor intou accountobzir, thepokazuje expansionse isda notne speedingdolazi updo afterubrzavanja all,ekspanzije.<ref>[http://space.newscientist.com/channel/astronomy/cosmology/mg19726461.600-dark-energy-may-just-be-a-cosmic-illusion.html Dark energy may just be a cosmic illusion], ''New Scientist'', issue 2646, 7 March 2008.</ref> howeverMeđutim, thistaj conclusionzakljčak isje disputedosporen.<ref>[http://space.newscientist.com/article/mg20026783.800-swisscheese-model-of-the-cosmos-is-full-of-holes.html Swiss-cheese model of the cosmos is full of holes], ''New Scientist'', issue 2678, 18 October 2008.</ref>
 
* '''AnomalousAnomalno increase of thepovećanje [[astronomicalastronomska jedinica|astronomske unitjedinice]]''': Recent measurements indicate that [[Astronomical unit#Developments|planetary orbits are widening]] faster than if this were solely through the sun losing mass by radiating energy.
 
* '''ExtraEksesivno energeticenergetični photonsfotoni''': Photons travelling through galaxy clusters should gain energy and then lose it again on the way out. The accelerating expansion of the universe should stop the photons returning all the energy, but even taking this into account photons from the [[cosmic microwave background radiation]] gain twice as much energy as expected. This may indicate that gravity falls off ''faster'' than inverse-squared at certain distance scales.<ref name=newsci2699>{{cite web|last=Chown|first=Marcus|title=Gravity may venture where matter fears to tread|url=http://www.newscientist.com/article/mg20126990.400-gravity-may-venture-where-matter-fears-to-tread.html|work=New Scientist|accessdate=4 August 2013|date=16 March 2009|issue=2699}}</ref>
 
* '''Extra massive hydrogen clouds''': The spectral lines of the [[Lyman-alpha forest]] suggest that hydrogen clouds are more clumped together at certain scales than expected and, like [[dark flow]], may indicate that gravity falls off ''slower'' than inverse-squared at certain distance scales.<ref name=newsci2699/>
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