Multiple choice general knowledge science & technology

The SDSS discovered the most distant quasar. How old was The Universe when the light left that quasar

  1. 100 Million years

  2. 500 Million years

  3. 2 Billion years

  4. 10 Billion years
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The SDSS has discovered quasars from when the universe was about 2-3 billion years old. The most distant quasars (z > 7) are from even earlier, but SDSS discoveries include many from the 2 billion year epoch.

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