"The definition of inflation is extraordinarily simple: it is any period of the Universe's evolution during which the scale factor, describing the size of the Universe, is accelerating. This leads to a very rapid expansion of the Universe, though perhaps a better way of thinking of this is that the characteristic scale of the Universe, given by the Hubble length, is shrinking relative to any fixed scale caught up in the rapid expansion. In that sense, inflation is actually akin to zooming in on a small part of the initial Universe."
Quote Details
Added by wikiquote-import-bot
Unverified quote
0 likes
Original Language: English
Available Languages (1)
Sources
Imported from EN Wikiquote
https://en.wikiquote.org/wiki/Expansion_of_the_universe
Revision History
No revisions have been submitted for this quote.
Categories
Expansion of the universe
68 quotes on TrueQuotesView all quotes by Expansion of the universe →
Related Quotes
"As for Hubble’s brightest star criterion, Sandage... has shown that objects in the of galaxies which Hubble believed …"
"An important new survey of the law relating red-shifts and magnitudes published in 1956 by Humason, Mayall and Sandag…"
"[I]n... 1952, Baade... announced that Hubble’s entire distance scale was in error... According to Baade, the distance…"
"At last, in 1949, the... ... was ready... Humason... succeeded in photographing the spectra of two remote galaxies in…"
"If a distant galaxy is moving relative to us, its entire is Doppler-shifted in frequency. Its s are displaced relativ…"
"All kinds of questions remain. Many have to do with cosmology. How did the universe originate? How did the galaxies b…"
"A book, too, can be a star, explosive material, capable of stirring up fresh life endlessly, a living fire to lighten…"
"Red-shifts are produced either in the nebulae, where the light originates, or in the intervening space through which …"
"All of this picture of the expansion is exciting, pleasant, coherent, well in order. But what if the s are not to be …"
"This circumstance of an expanding universe is irritating. ...To admit such possibilities seems senseless to me."