"[I]n... 1952, Baade... announced that Hubble’s entire distance scale was in error... According to Baade, the distances formerly assigned to all extragalactic objects must be multiplied by a factor of about two. Later it was generally accepted that this... was probably nearer three. ...[I]t followed that the sizes of all such objects had been underestimated. ...Therefore ...this nebula must be... twice as far away... [T]he average absolute magnitude at maximum brightness of novae... in the Milky Way attain on the average... 7.4, whereas those... in the Andromeda... 5.7... [T]he apparent anomaly could be removed by placing... Andromeda... rather more than twice as far as previously. ...[[w:Distance measure|[E]xtragalactic distances]] had ...been underestimated because of an error in converting... relative distances of s into an absolute scale. ...Baade's revision ...applied only to extragalactic objects... [and] had momentous consequences concerning the size and , for the scale of both was correspondingly increased."
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…"
"At last, in 1949, the... ... was ready... Humason... succeeded in photographing the spectra of two remote galaxies in…"
"All kinds of questions remain. Many have to do with cosmology. How did the universe originate? How did the galaxies b…"
"The definition of inflation is extraordinarily simple: it is any period of the Universe's evolution during which the …"
"All of this picture of the expansion is exciting, pleasant, coherent, well in order. But what if the s are not to be …"
"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 …"
"If a distant galaxy is moving relative to us, its entire is Doppler-shifted in frequency. Its s are displaced relativ…"
"This circumstance of an expanding universe is irritating. ...To admit such possibilities seems senseless to me."