Difference between revisions of "Big Bang theory"
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Observations of distant supernovae indicate that the Universe is actually undergoing accelerated expansion<ref>Riess, A. G., et al. The Astronomical Journal, Volume 116, Issue 3, pp. 1009-1038.</ref><ref>Perlmutter, S., et al. The Astrophysical Journal, Volume 517, Issue 2, pp. 565-586.</ref>. Modern galaxy surveys[https://www.sdss.org/dr5]<ref>Tegmark, M., et al. Physical Review D, vol. 74, Issue 12.</ref> and recent observations of the microwave background[http://map.gsfc.nasa.gov/]<ref>See, for example, http://arxiv.org/abs/astro-ph/0603449</ref> have corroborated these claims. | Observations of distant supernovae indicate that the Universe is actually undergoing accelerated expansion<ref>Riess, A. G., et al. The Astronomical Journal, Volume 116, Issue 3, pp. 1009-1038.</ref><ref>Perlmutter, S., et al. The Astrophysical Journal, Volume 517, Issue 2, pp. 565-586.</ref>. Modern galaxy surveys[https://www.sdss.org/dr5]<ref>Tegmark, M., et al. Physical Review D, vol. 74, Issue 12.</ref> and recent observations of the microwave background[http://map.gsfc.nasa.gov/]<ref>See, for example, http://arxiv.org/abs/astro-ph/0603449</ref> have corroborated these claims. | ||
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==References== | ==References== | ||
Revision as of 00:08, March 22, 2007
Template:Stub The Big Bang Theory models the Universe as expanding outwards from a very hot, dense initial state approximately 14 billion years ago. It was first proposed by Georges-Henri Lemaitre and evidence for the expansion was observed by Edwin Hubble[1]. Later George Gamow predicted that the Big Bang would leave an observable microwave background radiation. This radiation was subsequently discovered by Bell Labs and found to be close to that predicted by Gamow (Gamow predicted a background radiation level equivalent to a roughly 3 K black body object, and the observed level is that of a 2.725 K body).
Observations of distant supernovae indicate that the Universe is actually undergoing accelerated expansion[2][3]. Modern galaxy surveys[1][4] and recent observations of the microwave background[2][5] have corroborated these claims.
References
- ↑ Hubble, E. Proceedings of the National Academy of Sciences of the United States of America, Volume 15, Issue 3, pp. 168-173.
- ↑ Riess, A. G., et al. The Astronomical Journal, Volume 116, Issue 3, pp. 1009-1038.
- ↑ Perlmutter, S., et al. The Astrophysical Journal, Volume 517, Issue 2, pp. 565-586.
- ↑ Tegmark, M., et al. Physical Review D, vol. 74, Issue 12.
- ↑ See, for example, http://arxiv.org/abs/astro-ph/0603449