<P> Halley 's Comet or Comet Halley , officially designated 1P / Halley , is a short - period comet visible from Earth every 74 -- 79 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 might appear twice in a human lifetime . Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061 . </P>
<P> Halley 's Comet or Comet Halley , officially designated 1P / Halley , is a short - period comet visible from Earth every 74 -- 79 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 might appear twice in a human lifetime . Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061 . </P>
when was the last time halley 's comet was around
when was the last time halley 's comet was around
1986
1986