Multiple choice general knowledge

The light of distant starts is affected by

  1. the earth's atmosphere

  2. interstellar dust

  3. both (a) and (b)

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Starlight is affected by multiple factors: Earth's atmosphere causes scintillation (twinkling) and absorbs certain wavelengths, while interstellar dust causes extinction (dimming and reddening). Both effects must be accounted for in astronomical observations, making 'both (a) and (b)' the correct answer.

Keep practicing — related questions