RRB NTPC · Question 62
Orbital period of Halley’s comet is ______ years. A. 25 B. 50 C. 76 D. 100
Show answer & explanation
Answer: (D) C
Explanation
Halley's Comet returns roughly every 76 years (about 75–79). It was last seen in 1986 and will next appear in 2061.