Jagat itu apa sih? Jelaskan dalam bahasa sunda ya

<Div class="dablink">Artikel ieu nerangkeun jagat tina sawangan fiskal atawa émpirikal. Keur kagunaan séjén, tempo   (disambiguasi).

Istilah jagat miboga sababaraha harti, dumasar kana kontéks nu dipigunakeunnana. Dina istilah  fisikal, jagat total nyaéta jumlah-jamléh tina sakabéh matéri nu aya, kaasup ruang di mana sakabéh kajadian lumangsung atawa bisa lumangsung. Bagéan tina jagat nu bisa katempo atawa kaawaskeun geus kungsi kajadian disebut disebut jagat nu dipikanyaho, jagat nu bisa diawaskeun, atawa jagat nu bisa katempo. ku sabab inflasi kosmis miceun loba bagéan tina sakabéh jagatna tina horison nu bisa diawaskeun, lolobana ahli kosmologi narima yén henteu mungkin pikeun ngawaskeun sakabéh kontinuum sarta ku kituna bisa disebutkeun jagat urang, nujul kana ukur anu ilahar bisa dipikanyaho ku manusa. Dina istilah kosmologis, jagat dibayangkeun minangka kontinuum rohangan wanci nu aya watesna atawa  henteu aya watesna dina mana sakabéh matéri jeung énérgi aya. Sababaraha élmuwan merkirakeun yén jagat ieu mangrupa bagéan tina hiji sistim atawa loba deui jagat séjénna, nu disebut  multijagat.

Ékspansi jeung umurna, téori Big Bang

The most important result of physical cosmology, the understanding that the universe is  expanding, is derived from redshift observations and quantified by Hubble's Law. Extrapolating this expansion back in time, one approaches a gravitational singularity, an abstract mathematical concept, which may or may not correspond to réality. This gives rise to the Big Bang theory, the dominant modél in cosmology today. The age of the universe from the time of the Big Bang, according to current information provided by NASA's WMAP (Wilkinson Microwave Anisotropy Probe), is estimated to be about 13.7  billion (13.7 × 109) yéars, with a margin of error of about 1 % (± 200 million yéars).  Other methods of estimating the age of the universe give different ages with a range from 11 billion to 20 billion. Most of the estimates cluster in the 13-15 billion yéar range.http://www.sciencemag.org/cgi/content/abstract/299/5603/65?ijkey=3D7y0Qonz=GO7ig.&keytype=3Dref&siteid=3Dsci

A fundamental aspect of the Big Bang can be seen today in the observation that the farther away from us  galaxies are, the faster they move away from us. It can also be seen in the cosmic microwave background radiation which is the much-attenuated radiation that originated soon after the Big Bang. This background radiation is remarkably uniform in all directions, which cosmologists have attempted to explain by an éarly period of inflationary expansion following the Big Bang.

In the 1977 book The First Three Minutes, Nobel Prize-winner Steven Weinberg laid out the physics of what happened just moments after the Big Bang. As with most things in physics, that certainly wasn't the end of the story, as attested by the update and reissue of The First Three Minutes in 1993.