Comets

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The tail of a comet is over a million miles long.

We don't know. I've read estimates that Halley's Comet is probably large enough to survive another ten million years or so.

The problem, of course, is that a comet is like a "dirty snowball" in composition. Rocks and dust, loosely bound together by ice. While out in the depths of space, the snowball is perfectly stable. But when the comet approaches the Sun, the ice begins to vaporize and the vapor carries away some of the dust. This forms the tail of the comet.

With each approach, the comet becomes smaller and less stable. Some comets experience explosions, when a pocket of vaporized ice is trapped and then bursts carrying chunks of rock and dust away. We cannot predict when that will happen to Halley's Comet, but we know that someday, it WILL.

And comets do occasionally collide with things; things like Earth, or Mars, or Jupiter, or asteroids. A lot could happen.

Comets are dangerous because, they are pulled by gravity and when they hit the surface of a planet the force pushes it down and if you were in the way of the comet you would surely be dead. i hope that answered you question Ireland92109

Uranus was initially mistaken for a comet by William Herschel in 1781 when he first observed it through a telescope. It was later confirmed to be a planet due to its consistent orbit and lack of a visible coma or tail, typical of comets.

Both planets and comets in our Solar system share the same thing. The fact that they orbit Sol our local star. The planets orbit in a regular timely fashion in elliptical orbits that keep them about the same distance from the sun all the time. A comet has an elliptical orbit that takes it way out in our system and then it falls back in and comes close to the sun before heading back out again.

Some scientists believe that dinosaurs became extinct when a comet crashed into Earth. This catastrophic event led to widespread environmental changes, including extreme climate conditions that likely contributed to the mass extinction of dinosaurs and many other species.

Halley's Comet is a well-known comet that has been recorded throughout history, with the earliest known sighting dating back to 240 BC. Its periodic appearance every 75-76 years has been documented by civilizations such as the ancient Chinese, Greeks, and Babylonians.

Comets are made up of three distinctive parts: the nucleus, the coma, and the tail. If a comet passes close to the sun enough times, it loses nearly all of the frozen ice that trail after in its tail and surrounding it in the coma.

It helps us to know about the solar system's early history.

That's because we think comets are leftovers from the formation of the planets, etc.

They are very old, primitive bodies, like the asteroids.

Yes, when fragments of comet Shoemaker-Levy 9 hit Jupiter in 1994, they left visible scars in the planet's atmosphere that lasted for weeks. These impacts provided valuable insights into Jupiter's atmosphere and the dynamics of collision events in our solar system.

No. Comet brightness depends on the actual brightness, but also on the distance from the Sun. In 1986, Halley's Comet was not very bright, because it was far from Earth. The previous appearance in 1910 was distinctly brighter, but still wasn't even the brightest comet of the year; the "Great Daylight Comet of 1910" was visible during the day!

Comet Temple-Tuttle has an eccentricity of approximately 0.96. This means its orbit is highly elongated, with the comet coming close to the sun at perihelion and traveling far out into the solar system at aphelion.

Most comets move much faster than the Earth's velocity around the Sun, which is about eighteen miles per second. Halley's comet makes a wide loop every seventy-six years. Its farthest point from the Sun is beyond Neptune. When it is that far out, it parades through space very slowly; an airplane could probably keep up with it. As the comet moves in, it picks up speed. By the time it passes the Earth, it is sprinting along at close to forty miles per second.

Same as any other comet: away from the Sun.

Same as any other comet: away from the Sun.

Same as any other comet: away from the Sun.

Same as any other comet: away from the Sun.

The piece of a comet that trails behind it is called a tail. Cometary tails are composed of dust and ionized gases that become illuminated by the Sun, creating the characteristic bright streak visible from Earth.

No one knows. Comets are hard to see coming. They aren't visible until they come in past the orbits of the outer planets. We wouldn't get a lot of warning time, not that we could do very much to get out of the way or modify the orbit of the comet so it would miss us.

First of all, its not the Christmas Star. You arereferring to the star that appeared when Jesus was born. The reason its not the Christmas Star is because Jesus WAS NOT born on Christmas. They have rolled back the stars to the year He was born and shown that the constellation Ares (somehow the constellation of the Jews) was overhead and the star was inside that constellation (not one of the stars making up the constellation, just a bright light within) and that is what lead the three men to the city. By simple reasoning you can figure out that Jesus was not born in the winter because it says as plain as day, the shepherds were tending their flocks. Shepherds don't tend flocks in the winter. The reason that Christmas is on the 25th of December is because that was the Pagan holiday of the son. So in order to help convert more Pagans to Christianity they made a major holiday on the same day since everyone was used to celebrating on that day anyways. Any church official who says that Jesus was born on Christmas is either a retard or he is trying to sell you something because the book that they believe in has proof that is didn't happen that way. By rolling back the stars to the year He was born, they have found that He was born in April. I believe it was around the 14th or 17th.

About 6 or 7, with Hailies conet appering in 2061

Comet West was remarkable in its brightness and tail formation, providing astronomers with valuable data to study the composition and behavior of comets. It helped to confirm that comets are made of ice and dust, and its disintegration provided insights into the dynamics of comets in the solar system. Overall, Comet West contributed to advancing our understanding of comets' role in the formation and evolution of the solar system.

That period of time is called a " sidereal day ". That's not the period of time for your clock
or wristwatch to make a complete rotation.

The earth's rotation is 23hours 56minutes and roughly 4seconds.

A planet or comet's orbit that is farthest from the sun is called the aphelion. This is the point where they are at their greatest distance from the sun in their elliptical orbit.

The dust particles in the coma of comet 1P/Halley were made of diverse materials including silicates, carbon, and metals. These particles traveled at high speeds, impacting the probes with enough force to cause damage to their instruments and outer surfaces. The abrasive nature of these particles also caused wear and tear on the probe's components.

The Coma is the fuzzy outer layer of a comet.