Bishop James Ussher's estimate
of the age of the universe/creation, the beginning of time, as the
night preceding 23 October 4004 BC, according to the proleptic
Julian calendar. The speaker will not make fun of this serious
Christian scholarly estimate as is generally done now by the
theologically ignorant see http://en.wikipedia.org/wiki/James_Ussher. Come and celebrate creation day.
Galileo Galilei (see URL: http://en.wikipedia.org/wiki/Galileo) estimate of at least 20 million years
based upon fossils wood and fossil ammonites in Italy. Leonardo da Vinci discovery of mollusk
on the top of Tuscany mountains for another earlier age of the
earth estimate see URL: http://en.wikipedia.org/wiki/Leonardo_da_Vinci. The current best estimate of the age of
the universe, the dawn of time, of 13.75±0.11 Gyr (billion
What does this mean given that the earth, our reference frame did not even exist during creation, and that the proper time of a photon, particle of light is zero?
On Monday, October 16, 2017 it was announced that on August 17, 2017 merging neutron Stars were detected by LIGO and VIRGO and 2 seconds latter gamma rays burst were detected; GW170817 the 5th gravitational wave detection, but this time not merging black holes. Soon NGC 4993 an elliptical or lenticular galaxy 130 Million Light Years away, discovered by William Herschel in 1789. was the host for the merger, and over the next week multi-messenger astronomy Gravitational Waves, GW, and Electromagnetic waves, EMW, astronomy had begun. From gamma rays to radio waves this aftermath of merging neutron stars which had squirted heavy elements into the void and emitted EM, electromagnetic radiation, unlike merging black wholes that are black. The PowerPoint used during the show in 2017.
Montgomery College's Planetarium home page
Web page by Dr. Harold Alden Williams.
Last changed 5:47PM, Saturday, October 21, 2017.