Question

what is halley comets? and when halley comets has seen?​

Answer 1

Answer:

0.2–1.5 g/cm3 (est.) 2.2 d (52.8 h) (?) Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–76 years.

Perihelion: 0.586 AU; (last perihelion: 9 February 1986); (next perihelion: 28 July 2061)

Time of perihelion: 28 July 2061

Discovered by: Prehistoric (observation); Edmond Halley (recognition of periodicity)

Discovery date: 1758 (first predicted perihelion)

Explanation:

hope it helps you

Answer 2

Answer:

here is the answer and please mark me the brainlist

Explanation:

Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–76 years. Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and the only naked-eye comet that can appear twice in a human lifetime.

it was last seen in 1986. it will appear again after 76 years ,i.e. in 2062.