Changes

The term "Big Bang" implies an explosion of matter into pre-existing space, but the theory actually indicates that space is dynamic and more space is constantly created in the interstices between particles as the density of the universe falls.  In other words, the Big Bang describes the expansion of space and time.  Big Bang theorists state that the Hubble [[redshift]] is a consequence of this stretching of the fabric of space.

The term "Big Bang" implies an explosion of matter into pre-existing space, but the theory actually indicates that space is dynamic and more space is constantly created in the interstices between particles as the density of the universe falls.  In other words, the Big Bang describes the expansion of space and time.  Big Bang theorists state that the Hubble [[redshift]] is a consequence of this stretching of the fabric of space.

It should be noted that the Big Bang theory has received criticism because it ignores the theory of an oscillating universe. Also, no first cause from the Big Bang has ever been successfully identified. Futhermore, critics of the Big Bang point out that not everything in the universe is actually moving apart from everything else as some galaxies have collided with other galaxies in the past.  

It should be noted that the Big Bang theory has received criticism because it ignores the theory of an oscillating universe. Also, no first cause from the Big Bang has ever been successfully identified. Futhermore, critics of the Big Bang point out that not everything in the universe is actually moving apart from everything else as some galaxies have collided with other galaxies in the past, although this could be explained through understanding of classical mechanics.

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> and galaxy surveys<ref>[http://www.sdss.org/dr5/ Sloan Digital Sky Survey]</ref><ref>Tegmark, M., et al. Physical Review D, vol. 74, Issue 12.</ref> and recent observations of the microwave background<ref>[http://map.gsfc.nasa.gov/ Wilkinson Microwave Anisotropy Probe]</ref><ref>See, for example, http://arxiv.org/abs/astro-ph/0603449</ref> have corroborated these claims. Conventional wisdom is that the acceleration is caused by some sort of [[dark energy]], which has not yet been directly observed.

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> and galaxy surveys<ref>[http://www.sdss.org/dr5/ Sloan Digital Sky Survey]</ref><ref>Tegmark, M., et al. Physical Review D, vol. 74, Issue 12.</ref> and recent observations of the microwave background<ref>[http://map.gsfc.nasa.gov/ Wilkinson Microwave Anisotropy Probe]</ref><ref>See, for example, http://arxiv.org/abs/astro-ph/0603449</ref> have corroborated these claims. Conventional wisdom is that the acceleration is caused by some sort of [[dark energy]], which has not yet been directly observed.