Astronomi: Béda antarrépisi

Konten dihapus Konten ditambahkan
m →‎Bagbagan astronomi: Ngarapihkeun éjahan, replaced: kalolobaan → lolobana using AWB
Ilhambot (obrolan | kontribusi)
m Ngarapihkeun éjahan, replaced: model → modél (3)
Baris ka-7:
Dina mangsa munggaranana, balik deui ka jaman [[Yunani kuna]] jeung nu séjénna, astronomi utamana ngulik [[astrométri]], ngalelebah planét jeung bintang di langit. Kadieunakeun, pagawéan [[Johannes Kepler|Kepler]] jeung [[Isaac Newton|Newton]] geus naratas jalan pikeun [[celestial mechanics]], nu sacara matematis ngaramal ketak/pola interaksi ''celestial bodies'' nu kapangaruhan ku graviti, jeung objék-objék [[tatasurya]] umumna. Pagawéan-pagawéan nu dikeureuyeuh dina dua widang ieu, nu baheula lolobana dipigawé ku leungeun, ayeuna mah geus maké alat-alat otomatis, nepi ka geus dianggap lain disiplin mandiri deui. Gerakan jeung posisi objék geus gampang pisan ditéang, astronomi modern leuwih merhatikeun jeung ngusahakeun nengetan jeung neuleuman sipat fisik sabenerna objék-objék langit—what makes them "tick".
 
Ti mimiti abad ka-20 widang astronomi profésional beulah jadi ''[[observational astronomy]]'' jeung [[astrofisik tioritis]]. Najan ''astronomer'' lolobana ngagabungkeun unsur-unsur ti éta dua widang dina panalungtikanana, ku sabab bédana kaahlian nu dipaké, lolobana astronomer profésional leuwih condong ka salah sahijina. ''Observational astronomy'' leuwih condong utamana ka ngumpulkeun data, kaasup ngawangun jeung ngaropéa instrumén sarta ngolah data nu kakumpulkeun; cabang ieu ayeuna disebut salaku "astrométri" atawa "astronomy". Théoretical astrophysics is concerned mainly with figuring out the observational implications of different modelsmodéls, and involves working with computer or analytic modelsmodéls.
 
Widang ulikan astronomi ogé digolongkeun dumasar dua jalan nu béda: dumasar "subjék", biasana nurutkeun wewengkon langit (misalna ''Galactic astronomy'') atawa "masalah nu ditujul" (saperti dibentukna béntang atawa kosmologi); atawa dumasar cara nu dipaké pikeun meunangkeun data.
Baris ka-60:
During the [[Renaissance]] [[Copernicus]] proposed a [[heliocentric model]] of the [[Solar System]]. His work was defended, expanded upon, and corrected by [[Galileo Galilei]] and [[Johannes Kepler]]. Kepler was the first to devise a system that described correctly the details of the motion of the planets with the Sun at the center. However, Kepler did not succeed in formulating a théory behind the laws he wrote down. It was left to [[Sir Isaac Newton|Newton's]] invention of [[celestial dynamics]] and his [[law of gravitation]] to finally explain the motions of the [[planet]]s.
 
Stars were found to be faraway objects. With the advent of [[spectroscopy]] it was proved that they were similar to our own sun, but with a wide range of [[temperature]]s, [[mass]]es and sizes. The existence of our [[galaxy]], the [[Milky Way]], as a separate group of stars was only proven in the 20th century, along with the existence of "external" galaxies, and soon after, the expansion of the [[universe]] seen in the recession of most galaxies from us. [[Cosmology]] made huge advances during the 20th century, with the modelmodél of the [[big bang]] héavily supported by the evidence provided by astronomy and physics, such as the [[cosmic microwave background radiation]], [[Hubble's Law]] and [[big bang nucleosynthesis|cosmological abundances of elements]].
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[[image:ant.nebula.arp.600pix.jpg|thumb|right|250px|Stellar astronomy, Stellar Evolution: The [[Mz3|Ant planetary nebula]]. The ejection of gas, from the dying star at the center, has symmetrical patterns unlike the chaotic patterns expected from an ordinary explosion.]]-->