What is the periodicity of Halley's comet?
Show answer & explanation
Correct answer: C
Explanation
The correct option is option 3 i.e. 75-76 years.
| Halley's Comet | Halley's Comet is arguably the most famous comet. |
| It is a "periodic" comet and returns to Earth's vicinity about every 75 years, making it possible for a human to see it twice in his or her lifetime. | |
| The last time it was here was in 1986, and it is projected to return in 2061. |