TheExpandingUniverseSummary:InthisLecture,wecoverwhatisarguablythemostfar-reachingdiscoveryof20thCenturyscience:theexpansionofspace.We’llstartoffbydiscussing(a)theevidencethatledtothisdiscovery.(b)We’llbrieflycoverEinstein’sexplanationoftheHubbleLaw,beforemovingonto(c)thewildcontroversybetweentheBigBangandSteady...
The Expanding Universe: Evidence for AccelerationReview of Hubble’s LawExcel Activity: Hubble’s Law with recent dataModern interpretation of a Hubble diagramBrainstorm Activity: Hubble diagrams that account for a changing rate of ex
The UniverseThe Expanding Universe•Edwin Hubble, 1920’s and 1930’s: Galaxies receding from us•The farther away they are, the faster they recede•Velocity increase seems to be linear•Implies that at some point in the past, everything was in a small space•24 km/sec per million...
CHAPTER 3 THE EXPANDING UNIVERSE If one looks at the sky on a clear, moonless night, the brightest objects one sees are likely to be the planets Venus, Mars, Jupiter, and Saturn. There will also be a very large number of stars, which are just like our own sun but much farther from ...
Eddington, AS (1933) The Expanding Universe.Eddington, A.: 1933, The Expanding Universe , Macmillan, New York.A.S. Eddington, The Expanding Universe (Cambridge: Cambridge University Press, 1933).Eddington , A. S. The expanding Universe (Cambridge 1933)....
Using a variety of Earth- d and space- d instruments, our knowledge of the structure, evolution, and ultimate fate of the Universe has undergone two dramatic changes in the last 100 years. The currently accepted model of the Universe contains Dark Matter, Dark Energy, WIMPs, MACHOs, 3 ...
BIG BANG THEORY - The Expanding Universe According to the Big Bang Theory, the universe formed in an enormous explosion about 10 to 15 billion years ago. Evidence Moving galaxies: All galaxies are moving away from us and from one other. Theory Big Bang Cosmic background radiation: This glow...
Distant supernovae are revealing the crucial time when the expansion of the universe changed from decelerating to accelerating
Related to expanding universe:expanding universe theory expand′ing u′niverse n. a model of the universe, based on observed redshifts of distant galaxies, in which the galaxies are receding from each other at a speed proportional to their separation. ...