A Recent Record for the Most Distant Galaxy Yet Discovered

question 37

Multiple Choice

A recent record for the most distant galaxy yet discovered was held by a galaxy that has a redshift of z =8.68.Compared with the current scale factor of the universe, what was the scale factor when the light from that galaxy started its long journey to us?

• A) about 10 times smaller
• B) about 50 percent smaller
• C) about 0.001 percent smaller
• D) about 99 percent smaller
• E) about 250 percent bigger

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