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Creation  Volume 37Issue 1 Cover

Creation 37(1):50–51
January 2015

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‘Light from the big bang’ casts no shadows

If the big bang were true, the light from the fireball should cast shadows in the foreground of all galaxy clusters.



Figure 1: Temperature fluctuations of the all-sky projection of the CMB radiation, after a constant background equal to 2.725 K was subtracted. Darker spots represent cooler regions and brighter spots represent warmer regions. The central red region is radiation from the Galaxy, which needs to be removed before the supposed background radiation can be seen without foreground contamination.

One of the alleged ‘proofs’ of the big bang model of origins is said to be the Cosmic Microwave Background (CMB). The radiation was discovered in 1964 by Penzias and Wilson for which they won the Nobel prize in physics. Soon after their discovery, it was claimed that this radiation is the ‘afterglow’ of the original ‘explosion’ or fireball of the big bang. Since the time at which the radiation, which started as heat, was emitted from the fireball, the universe has allegedly expanded by a factor of 1,100. Thus, that ‘afterglow’ radiation has ‘cooled down’ to much longer wavelengths (‘stretched’ from the infrared to the microwave portion of the spectrum).1 These are detected by microwave telescopes today.

According to theory, the big bang fireball should be the most distant light source of all. Thus all galaxy clusters would be in the foreground of this source. Therefore all CMB radiation must pass the intervening galaxy clusters between the source and the observer, here on earth. This radiation passes through the intergalactic medium, between the galaxies in the clusters, and is scattered by electrons, through inverse Compton scattering,2 now known as the Sunyaev–Zel’dovich effect (SZE).3 When this happens, the path of the CMB radiation is interrupted and distorted.

In 2006 it was reported and published in the Astrophysical Journal4 that indeed there is strong evidence, out to at least one degree from the cluster centre, of an anomalous cooling effect. The anomaly was that the expected shadowing effect was not found when compared with what was expected from the SZE.5 The study looked for a shadow in the CMB radiation cast in the foreground of galaxy clusters, which must be closer to us than the alleged source of the background radiation. The study involved 31 galaxy clusters with a net result indicating that on average no systematic shadows were detected. In fact, the question was asked, Why are the clusters so relatively hot? Is there an additional source of emission that cancels out the expected shadow?


Figure 2: CMB radiation should cast a shadow in the foreground of galaxy clusters, but it does not.

The results were reported in under the headline “Big Bang’s Afterglow Fails Intergalactic ‘Shadow’ Test”.6 A team of University of Alabama Huntsville scientists, led by Dr Richard Lieu, used data from NASA’s Wilkinson Microwave Anisotropy Probe (WMAP) to scan the cosmic microwave background for shadows. Previous groups have made these sorts of studies but this was the first with WMAP data. Remember WMAP was designed specifically to detect the signature or echoes of the big bang. But … “Either it (the microwave background) isn’t coming from behind the clusters, which means the Big Bang is blown away, or … there is something else going on,” said Lieu.

More woes for a big bang history of the universe. And yet another problem for those who hang their Christian apologetics on the beliefs of ‘modern science’.7,8 Some of those who erroneously believe in big bang ‘creation’ tried to refute this claim but failed to even understand the basic physics involved.9

The interpretation of the observational evidence presented by Lieu et al. seems to be still unrefuted. This means that the source of the CMB must be local and not from the big bang. However, the worldview which incorporates belief in the big bang is dominant, and the SZE effect is now used to detect the presence of galaxy clusters. They are looked for in the CMB data from the latest Planck satellite operated by ESA. But if the SZE only yields a cooling effect in 25% of clusters, as was found in the Lieu et al. (2006) study, wouldn’t that mean they are going to miss detecting 75% of the clusters, all because of an erroneous worldview?

Lieu’s words resonate here:

“There is something else going on!”

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Further Reading

References and notes

  1. In standard big bang cosmology, the big bang produced lots of protons and electrons, forming a plasma where the charged particles would be opaque to electronmagnetic radiation. After about 380,000 years, or a redshift (z) of 1,100, this plasma cooled enough to condense into hydrogen atoms, at around 3000 K (~2700°C, 5000°F). This would be transparent to electromagnetic radiation, which would be mostly infrared at that temperature (peaking at 966 nm). The current CMB is supposed to be the strongly redshifted afterglow, as the universe has cooled by a factor of 1,100. Return to text.
  2. Compton scattering means that a photon collides with an electron, imparting some energy to the electron which recoils, while another photon carrying the remaining energy (so a lower frequency) is emitted at an angle from the original so momentum is conserved. Inverse Compton scattering means that a very energetic electron loses energy, so the scattered photon has a higher energy and thus higher frequency. Return to text.
  3. Sunyaev [Сюня́ев], R.A. and Zel’dovich [Зельдо́вич], Y.B., Small-scale fluctuations of relic radiation, Astrophysics and Space Science 7:3–19, 1970. Return to text.
  4. Lieu, R., Mittaz, J.P.D. and Shuang-Nan Zhang, The Sunyaev–Zel’dovich effect in a sample of 31 clusters: A comparison between the x-ray predicted and WMAP observed Cosmic Microwave Background temperature decrement, Ap. J. 648:176–199, 1 September 2006. Return to text.
  5. However the expected cooling due to the shadowing effect of the galaxy cluster was found to be deficient by 100 µK. For example it might have been expected that the foreground cluster would cast a 150 µK shadow (i.e. would be cooler by this amount) but only 50 µK was observed. Return to text.
  6. Big Bang’s Afterglow Fails Intergalactic ‘Shadow’ Test,, 12 September 2006. Return to text.
  7. Lerner, E., Bucking the big bang, New Scientist 182(2448)20, 22 May 2004. Return to text.
  8. Wieland, C., Secular scientists blast the big bang: What now for naïve apologetics? Creation 27(2):23–25, 2005; Return to text.
  9. Hartnett, J.G., The big bang is not a Reason to Believe!,, 20 May 2014. Return to text.

Ken E. wrote: “I just wanted to drop a note to express my gratitude for the kind of information you supply at the CMI web-site. I love science and find it thrilling to see how it may be used to glorify God and build faith in Him.” Glorify God in His creation. Support this site

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Readers’ comments
Gabriel S., South Africa, 6 June 2016

There is a very scientific explanation for the lack of the 'big bang' shadow - the 'big bang' does not exist.

Regarding the shadow of God though, much can be said, for example, Psalm 91. The 1st verse already gives a foretaste of the glorious content :

"He that dwelleth in the secret place of the most High shall abide under the shadow of the Almighty."[KJV]

Apart from God's shadow, there only is the shadow of death.

Alex W., Australia, 6 June 2016

On a cloudless day the Sun casts strong shadows on Earth, but on a cloudy day the sunlight is scattered in all directions by the clouds and no shadows are cast. Since the CMB is coming to us from all directions should there not be a similar scattering effect (due to all the intervening galaxies and inter-galactic media) that likewise eliminates shadows?

John Hartnett responds

On a cloudy day shadows are cast onto the earth. If a large region of the sky is covered with clouds you might not perceive shadows as you only see shadow all around you, i.e. there are no nearby brighter and darker regions on the ground. But the same effect is still there. The clouds provide a cooling effect due to the interruption of the direct rays from the sun. The exact same effect should be seen in the CMB earthward of galaxy clusters though the scattering process, the SZE, is a somewhat different process.

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