space medium True/False

The Lyman-alpha forest in quasar spectra reveals the distribution of neutral hydrogen in the intergalactic medium.

  1. True
  2. False

Answer: True

Absorption lines blueward of Lyman-alpha emission trace intervening hydrogen clouds at different redshifts, mapping cosmic web structure.

Topic Astronomy - Cosmology
Exam Relevance UPSC Prelims, SSC CGL
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