4.5 light hours i think
Halley's Comet is currently a little beyond the orbit of Neptune.
4.5 light hours
Yes, Halley's comet orbits the Sun in an elongated elliptical orbit, which means it travels closer to the Sun and then swings far out into space before returning again on its approximately 76-year journey.
Halleys Comet is by far the best known. The second is harder to determine - Hale-Bopp and Comet McNaught are known at the moment amongst the general public.
because the comet is so far away theat you cant see it without a telescope
No it won't. It will be seen from Earth, but it will be a long way from Earth, so it poses no danger to us. You can see many things in the sky at night that are a very long way away. Right now Halley's Comet is too far away to see, but when it is close enough to see, it will still be a very long way from Earth in 2061, just like it was when it was seen in 1986 and in 1910 and other previous occasions that it has been seen from Earth.
Halley's Comet is arguably the most famous comet in history. It is visible from Earth every 76 years, making it a well-known and anticipated astronomical event for centuries. Its appearances have been recorded since ancient times, with the earliest known sighting dating back to 240 BC.
By themselves, comets are not really important. Even the most impressive comet, like Hale-Bopp, is a visual spectacle only. But the POTENTIAL for a comet - to strike the Earth directly and cause untold devastation - is far more significant. Right now, if we were to see a comet aimed at the Earth, there is very little that we could do about it, other than stand there and die. The threat of a comet impact, like the ones that have devastated our planet several times before, ought to be enough spur us all into looking for ways to protect ourselves from the inevitable time that it WILL happen again.
We expect the only Halley's Comet there is to return to the inner solar system in 2061. That means it'll get close enough to the sun so that we can see it, but we can't tell yet exactly how close to earth it's likely to get.
Halleyâ??s Comet is a periodic comet and returns to earth at roughly every 75 years as predicted by Edmond Halley. Who happened to notice the pattern but was unable to see its return in 1758. In 1910 the comet was especially fantastic, having passed Earth by at about 13.9 million miles, and was photographed for the first time. The return of the comet in 1986 was met by a number of nationâ??s satellites. This fleet of spaceships is sometimes dubbed the "Halley Armada." But was only a spec on the horizon for most of the Earths telescopes as it passed on the other side of the sun opposite Earth at the time.
Halley's comet is in orbit round the sun. Its orbit time is about 75 years, but as the orbital path is long and narrow, most of that is spent far out where we cannot see it. We see it for a few months when it is near the sun.
4.5 light hours