What is the primary reason stars appear to twinkle in the night sky as seen from Earth?

Question

What is the primary reason stars appear to twinkle in the night sky as seen from Earth? — Exam MCQ

rrbjepyq.in · Accepted Answer

C. The light from stars is refracted by varying atmospheric layers — Twinkling is caused by atmospheric refraction: changing layers of air continually alter the path of starlight.

rrbjepyq.in · Answer

A. Stars are closer to the Earth than planets

rrbjepyq.in · Answer

B. The Earth rotates causing starlight to flicker

rrbjepyq.in · Answer

D. Stars emit light at varying intensities

What is the primary reason stars appear to twinkle in the night sky as seen from Earth?

📚 Related Questions — Light