Changes

== The size of the universe ==

== The size of the universe ==

The maximum distance that can be determined using parallax calculations is about 3300 light years<ref>[http://bccp.lbl.gov/Academy/pdfs/Parallax.pdf Parallax], site http://bccp.lbl.gov</ref>. Indirect measures, correlating the brightness of stars called ''cepheids'' with the period of their variability, estimate the [[Milky Way]] diameter of approximately 80-100,000 light years, although others estimate the size of the entire universe to be as narrow as only 12,000 light years across.<ref>Fangrad, Richard, 2007.</ref>

The maximum distance that can be determined using parallax calculations is about 3300 light years.<ref>[http://bccp.lbl.gov/Academy/pdfs/Parallax.pdf Parallax], site http://bccp.lbl.gov</ref> Indirect measures, correlating the brightness of stars called ''cepheids'' with the period of their variability, estimate the [[Milky Way]] diameter of approximately 80-100,000 light years, although others estimate the size of the entire universe to be as narrow as only 12,000 light years across.<ref>Fangrad, Richard, 2007.</ref>

Calculations based on the observed brightness of [[supernova]]e of known energy output can determine the distance to more distant objects.  The most distant object known is a galaxy cluster is estimated to be approximately thirteen billion light-years away from Earth, observed by the [[Hubble Telescope]] using gravitational lensing.<ref>Amos, 2004</ref>

Calculations based on the observed brightness of [[supernova]]e of known energy output can determine the distance to more distant objects.  The most distant object known is a galaxy cluster is estimated to be approximately thirteen billion light-years away from Earth, observed by the [[Hubble Telescope]] using gravitational lensing.<ref>Amos, 2004</ref>

==Starlight Problem for the Big Bang Theory==

==Starlight Problem for the Big Bang Theory==

Although atheists simplistically use the starlight problem to argue against a  young Earth, the [[Big Bang theory]] has greater difficulty in explaining its own light travel problem, known as the horizon problem.

Although [[atheist]]s simplistically use the starlight problem to argue against a  young Earth, the [[Big Bang theory]] has greater difficulty in explaining its own light travel problem, known as the horizon problem.

The Big Bang model proposes that the temperature of the [[Cosmic Microwave Background]] (CMB) would have varied considerably from place to place early in the universe, yet because the speed at which this radiation can disperse from hotter to colder parts of the universe is limited by the speed of light, there has not been enough time for the radiation to even out, yet observations today show it to be extremely uniform<ref name="Lisle">Lisle, 2003</ref> (with fluctuations at the part-per-million level<ref>[http://map.gsfc.nasa.gov/m_uni/uni_101Flucts.html Fluctuations in the Cosmic Microwave Background]</ref>).

The Big Bang model proposes that the temperature of the [[Cosmic Microwave Background]] (CMB) would have varied considerably from place to place early in the universe, yet because the speed at which this radiation can disperse from hotter to colder parts of the universe is limited by the speed of light, there has not been enough time for the radiation to even out, yet observations today show it to be extremely uniform<ref name="Lisle">Lisle, 2003</ref> (with fluctuations at the part-per-million level<ref>[http://map.gsfc.nasa.gov/m_uni/uni_101Flucts.html Fluctuations in the Cosmic Microwave Background]</ref>).