How many years do a comet appear on earth sky?
They appear at different times and different rates. Haley's Comet for instance appears every 75 years.
It take exactly 75 to 76 years.
Halley's comet passes by Earth every 75-76 years. The next time it will approach Earth is in 2061.
Halley's Comet takes 73.5 years to orbit the sun but every comet is different just like planets.
over 300 years.
Haley's commet apppears every 74 years. =]
Two, Comet Halley and Comet Encke
Halley's Comet travels by the earth each 76 years. It last appeared in 1986. It will likely return in the year 2063.
It takes about 76 years for Halley's Comet to come near the earth. It last came by in 1986. It will probably return in 2062.
It takes 75 years
It depends at what Mass it is the speed of which its comming towards earth at.
Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061. Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and… Read More
A comet that does not hit the Earth would cause no damage at all. A comet that hits the Earth would be as destructive as many nuclear bombs, depending on how big it was and where it hit. It is likely that a giant comet or asteroid hit the Earth (near Mexico) 65 million years ago, resulting on the extinction of the dinosaurs and 90% of all land life on Earth.
Halley's Comet last appeared in the inner Solar System in 1986 and will next appear in mid-2061. The 1986 occurance was one of the least prominent appearances for Earth viewers during the last 2000 years, many people who looked for it never saw it!
Comets don't or it the earth, they are in long irregular orbits around the sun. These orbits can range from a few years to thousands of years.
Approximately every 76 years 1986 + 76 = 2062
It doesn't rotate around earth, but around the sun. This happens every 75-76 years on average.
It takes roughly 75 years for Halley's comet to come by the earth. All comets orbit the sun, but they do not all originate from the same place, which accounts for their paths and how long their individual orbit takes.
The Hale-Bopp Comet will appear in the inner-solar system in approximately the year 4377. This is due to on April 1996 the comet passed within 0.77-0.771 AU of Jupiter, this distance is close enough for the comet's orbit to be affected by the planet's gravitational force.
The Halley's Comet appers in every 78 years taht why its only rotates once every 78years T_T
Good question. Comets can appear almost any time; except for the "repeating" comets, we don't know when they will appear. The problem is that people have only been keeping good records of comets for about 1500 years, and many comets have periods much longer than that. The next comet to show up in the sky could be one that hasn't been near Earth since before men came down from the trees and began walking upright.
It takes some 75 to 76 years for Halley's Comet to orbit the sun. It last appeared in the inner Solar System in 1986, and will next appear in mid 2061. A link is provided to the Wikipedia article on Comet Halley.
It has never hit the earth - otherwise it would have ceased to exist. It comes round in a cycle about every 75 years. Mark Twain was born in the year of Halleys' Comet, and said he would probably go out with it too. He did.
Halley's Comet is visible every 76 years or so. Prior to its 1986 apparition, it was last visible in 1910. See the link below to the Wikipedia entry on Halley's Comet, which discusses many of the past appearances.
It is visible from Earth every 75-76 years. 76 years. Next expected visit is mid-2061 75 years 76 yrs 75 years
That is completely unpredictable at this time. Best can be said is probably not this week.
Many comets are irregular - they may come back after millions of years, or not at all. So, it can't always be known in advance when there will be a comet. Many comets are irregular - they may come back after millions of years, or not at all. So, it can't always be known in advance when there will be a comet. Many comets are irregular - they may come back after millions of years… Read More
about 140,00 years ago
Many comets orbit the sun. How often we see them depends on their orbits. Halley's Comet, the most famous one, returns about every 75 years. It was last seen in 1986 and is expected again in 2061.
halleys comet apeared twise in the 20th century
Halley's Comet doesn't orbit the Earth; it orbits the Sun. It is in a highly elliptical orbit that takes it out beyond the orbit of Neptune, and comes just inside the orbit of Venus, taking 76 years to complete one orbit.
Halley's comet appears every 75-76 years.
Somewhere between 200 and 100 thousand years ago.
Halley's comet appeared twice in the 20th century. Once in 1910 and in 1986. Halley's comet is due again in 2062.
Halley's comet returns every 76 years. It is next due in 2062.
3.5 Billion Years Ago
Twice; 1910 and 1986.
It depends on the comet. You can see comets when they are making their swing around the sun, if they are large enough and if their orbital path brings them close enough to earth. Many small comets are not visible, and we cannot see any of them when they are far enough from the sun. Halley's is probably the best known comet, and it was visible at its last approach to the sun in 1986… Read More
Halleys comet comes back around every 76 years.
Halley's comet didn't even come near Earth - just near enough to see it.
About 76 years.
The orbits of comets are elongated ovals that take the comet around the sun and then far out beyond Pluto. We can see them only in that part of their orbit which brings them close to the Earth
The answer depends on the size of the comet and the location of the impact. A very small comet may simply burn up in the atmosphere with no adverse effects on the Earth's surface. A larger comet may explode over the surface of the Earth causing localized destruction, but not effecting the entire planet (research the Tunguska Event for a similar event). However, a large enough comet could cause widespread destruction, throwing dust and ash… Read More
Yes. many times Gary Carlsen
It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth. It has been seen by people for over 2000 years… Read More
Halley's Comet has an orbital period of about 75.3 years. The next visit (called its perihelion - the closest point to the Sun) is expected in July 2061. The extremely eccentric orbit of Halley's Comet brings it to the inner solar system about every 74 to 76 years. There's no way to tell yet how close it may be to the earth at that time. It was last visible in 1986. How close it will… Read More
There is a comet medal in every first star of a galaxy. Some galaxies don't have comets (not including green star comets.) This means that comets appear based on how many medals you have, not which galaxy you got them from. For example, if you have all the comet medals except the one in Yoshi Star Galaxy, then it's still possible for a comet to appear there, but it means that a comet might not… Read More
around 75 years
Hayley's Comet does not orbit the Earth. It has a long elliptical orbit around the Sun, and gets as far out as the orbits of Neptune and Pluto (35.1 AU) , only to return to the inner solar system every 75-76 years. (Its orbit is perturbed by some planets.) It last reached perihelion (closest to the Sun) in 1986, and it will not return until 2061.
4.6 billion years ago the first procaryotic cells were discovered on planet earth
yes many times actually in the past.