Which of the following is the reason that Comet Halley is observed to be much more spectacular at some appearances than at others?

Question

Quizplus · Accepted Answer

Comet Halley's observability and spectacular appearance when it nears the Sun (perihelion) are significantly influenced by the time of year this event occurs. If perihelion happens when the comet is on the same side of the Sun as Earth and at night for observers on Earth, it is more likely to be visible and spectacular. The variability in its appearance is not due to changes in the size of its nucleus, the shape of its orbit, or being hidden behind other planets.

Which of the Following Is the Reason That Comet Halley