Why Is It Not Possible to Look All the Way $\gt$

question 76

Multiple Choice

Why is it not possible to look all the way back to the Big Bang itself?

• A) Photons are not produced until the stars begin to shine at a redshift of z 20.
• B) From redshifts of z=0 to 100, photons are gravitationally lensed by the dark matter in the universe.
• C) At redshifts of z \(\gt\)1,000, most of the photons are blocked by large amounts of cold gas and dust.
• D) For redshifts of z \(\gt\)1,000, photons cannot travel freely because they easily interact with individual protons and electrons in the universe.
• E) Photons from the Big Bang would be so strongly redshifted that we could never detect them.

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Definitions:

Free Radical Chlorination

A chemical reaction involving the substitution of hydrogen atoms in alkanes with chlorine atoms through the action of free radicals, typically used in organic synthesis.

Bonds Formed

The creation of chemical bonds between two or more atoms leading to the formation of molecules or compounds.

Bond Dissociation Energies

The energy required to break a specific chemical bond in a molecule, indicating the bond's strength.

Carbon-bromine Bond

The covalent bond formed between a carbon atom and a bromine atom, often seen in organobromine compounds.