The largest OBJECT ever to hit the Earth was probably the proto-planet Theia that we believe collided with the proto-Earth, the debris from which formed the Moon. That probably was not a comet. Theia may have been as large as the planet Mars.
Beyond that, we really don't know. There isn't any way to determine, 65 million years after the fact, whether the impactor that probably caused the K-T extinctions and killed off the dinosaurs was really a comet, or an asteroid; perhaps it doesn't really matter. That object may have been as large as 10 miles in diameter. And we don't really KNOW the cause of the Great Permian Extinction 252 million years ago; it may have been an impact event, or there may have been other causes for the destruction of perhaps 95% of all life on Earth.
We believe that during the first couple of million years of Earth's existence, it probably suffered a great number of quite massive impacts, but we do not (as yet) have any detailed information about the early history of our planet.
That is Halley's comet, named after English astronomer Edmond Halley,
A comet. ^.^
Halley's Comet or Comet Halley (officially designated 1P/Halley) is the most famous of theperiodic comets and can currently be seen every 75--76 years. Halley's Comet last appeared in the inner Solar System in 1986, and will next appear in mid-2061.
No. Halley's Comet barely gets past the orbit of Neptune, and not by much. It is well short of reaching into the Kuiper Belt.
All orbits are ellipses. Some orbits, like the orbit of the Earth around the Sun, are almost (but not quite) circular. Other objects, like the Moon or Mars, have orbits that are more distinctly oval shaped.Comets have elliptical orbits with very high eccentricity; they are stretched so that they come quite close to the Sun, but still go dozens or hundreds of AU away. Some comets are less severely eccentric. Halley's Comet, for example, only goes out to about 30AU with a period of 76 years, while Comet Hale-Bopp has a period of closer to 2200 years.
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Halley's Comet is currently a little beyond the orbit of Neptune.
Edmund Halley did not invent anything, but he was a British astronomer known for calculating the orbit of the comet that now bears his name. Halley's Comet, which passes by Earth approximately every 75-76 years, was the first comet to be recognized as periodic.
Halley's comet appears because it is a comet that orbits the Sun. It as a highly elliptical (oval) orbit which makes it seem to fly out of the solar system and back.
No. The only way a comet could cause a catastrophe would be if it collided with Earth. The orbit of Halley's Comet keeps it at a safe distance from us.
No. It's a comet.
whats halleys comet nicknames
big
Halley's comet appears as a bright ball of light with a long, glowing tail. It is typically visible to the naked eye and has been observed by astronomers for centuries. The length and brightness of its tail can vary depending on its position in its orbit around the sun.
early 2062
in 2061 or 2062
halleys comet