Question

Halley's comet can be seen from the Earth after every $26$ years.
a) True
b) False

Answer 1

Hint: Halley's comet is the most popular. It is periodic and returns to Earth's region about every $75$ years, producing it possible for humans to view it twice in their life. The last time it was seen was in $1986$, and it is predicted to return in $2061$. It justly did, though $16$ years later, his death. Halley also found that transitions of Mercury and Venus across the sun could be utilized to determine the solar system size.

Complete answer:
Halley’s Comet is the first Comet whose coming back was foretold and, almost three centuries succeeding, the first to be imaged up the nearby interplanetary spaceship. In $1705$, Edmond Halley, an English astronomer, published the first record of the orbits of $24$ comets. His estimations showed that comets observed in $1531$, $1607$, and $1682$ had very similar orbits. Halley suggested that there was one Comet that returned roughly every $76$ years, and he predicted that Comet’s appearance in $1758$. Halley was dead to see his prediction become true, but the Comet was sighted late in $1758$, moved perihelion in March $1759$, and was named in Halley’s honour. Its periodic returns showed that it was in orbit of the Sun and, thus, that at most limited, some comets were parts of the solar system.
Earlier ways of Halley’s Comet were later estimated and checked against old records of comet sightings. Some have considered that a comet noted in Greece between $467$ and $466$ BCE may have been Halley. Halley’s nearest approach to Earth occurs on April $10,837$, at a distance of $0.04$ astronomical units. It was the sizable bright Comet seen six months before the Norman Conquest of England in $1066$ and depicted in the Bayeux Tapestry.
Halley's comet is a tiny period comet apparent from Earth every $75–76$. Halley is the only discovered short-period comet visible to the naked eye from the Earth and the only naked-eye comet that can be seen twice in human existence. Ha1lley last appeared in the internal parts of the Solar System in $1986$ and will next arrive in mid $2061$.

Option (b) is correct.

Note:
There is a collection of comets called "Halley family comets" because they seem to share the identical orbital characteristics of Halley, including being extremely inclined to the Earth orbits and other planets' solar system. However, this family has an inclination range, which proposes that other astronomers recommend they have a separate origin than Halley. Some advice these comets could have resulted from the Oort Cloud.