Sunday, March 24, 2019
Revolution in Cosmology Resolves Dispute over Universes Age Essay
Revolution in cosmogeny Resolves Dispute over Universes AgeJust under seven date ago, astronomers using the Hubble space telescope presented results they hoped would help answer one of the most(prenominal) contentious issues in astronomy of the 20th century the question of the quad scale of the mankind. But there was some unease when the result was announced. concord to the report, other galaxies were close enough that, extrapolating backwards from their current rate of respite and making adjustments for the influence of gravity, they all would lose been together (that is, the Big bed would have occurred) as recently as 8 billion geezerhood ago. Unfortunately, there was strong evidence already in place that some stars were at least 12-15 billion years old apparently predating the offset of the universe itselfWhile these two highly irreconcilable values for the universes age certainly posed a serious challenge to astronomers, most only when assumed that better measurin g rods would place the distance scale back in line with the older age. What no one expected is that resolution to this puzzle would lie not in corrected measurements but a variation in cosmology, and the apparent discovery of what amounts to a mysterious new mettle of the cosmos a fifth element that hides in vacuum and drives the amplification of the universe.The scientific study of the age and origin of the universe is intimately coupled with the measurements of extragalactic distance, and consequently the science did not even exist until measurement techniques accurate to such scales were invented. Distance measurement has always been difficult for astronomers until the 1800s, no one knew even the distance to the nearest star (other than the Sun), and th... ...pressure and a all told host of other strange properties that gravitationally repel all touch space, expanding the universe in absence of some(prenominal) physical substance. Further more, by expanding the univers e, more empty space is created, creating even more antigravitational force and making the universe expand ever faster, leading to a runaway expansion that volition eventually culminate in the dilution of all remaining matter into nothingness.And in this lies the solution to the long-standing age issue. If the universes expansion is constantly getting faster, it must have been slower in the past, pushing the age of the universe upward to about 13 billion years, right in line with the ages of stars. So without any major revision to the distance to nearby galaxies or the ages of stars, the question of the on-key age of the universe has been solved in a way no one expected.
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