Motion of distant objects in the Universe

Scientific paper - Original scientific paper

• Author: Amon Ilakovac
• Author: Ksenofont Ilakovac
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

We give a brief survey of investigations of the structure of the Universe and of its expansion, for educational purposes. As we know it today, the size of the Universe is immense, enormous numbers of galaxies have been found in it, and in each galaxy enormous numbers of stars. The galaxies move from us at very high speeds, some of the more distant ones at speeds comparable to the velocity of light. Many theories have been developed to explain the vast amount of data that have been obtained by astronomical observations. We give a simplified theory of the cosmic expansion and present results of three models for the cosmic scale function R(t): the constant rate of expansion, the accelerated expansion and the constant Hubble parameter models.

• Keywords (english): simple theory of cosmic expansion; models of cosmic scale function; velocity-distance relation
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review
• Publication version: Published version
• Journal title: Fizika A
• Numbering: vol. 19, no. 4, pp. 263-272
• p-ISSN: 1330-0008
• URN:NBN: urn:nbn:hr:217:126418
• Publication: 2010
• Document URL: http://fizika.hfd.hr/fizika_a/av10/a19p263.htm
• Type of resource: Text
• Access conditions: Open access
• Created on: 2019-10-31 20:37:48