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Comets
Comets are small solar system bodies that orbit around the Sun. They have a tail (trail of light) when traveling in space.
1,186 Questions
What is Halley's comet rotation rate?
Halley's Comet does not rotate, but perhaps you mean revolve, as in how long it takes to revolve around the sun.
If that is what you mean, then the revolutionary period of Halley's Comet is about 75-76 earth years.
Why do people call asteroids meteors and comets space trashor debris?
People often refer to asteroids, meteors, and comets as space trash or debris because they are remnants from the formation of the solar system that are no longer part of a larger celestial body. Asteroids are rocky objects that orbit the sun, meteors are asteroids that enter Earth's atmosphere and burn up, and comets are icy bodies that release gas and dust as they approach the sun. These objects can be considered "trash" in the sense that they are leftover material floating in space.
What are the other examples of comet?
Some other examples of comets include Comet Halley, Comet Hale-Bopp, and Comet Hyakutake. These comets are known for their brightness, size, and visibility from Earth.
What are the characteristic of comet?
Comets are small asteroid-like bodies when they are far from the Sun, traveling in highly ellipical orbits about the Sun. When they sweep in close to the Sun, dramatic changes occur as they brighten and develop an extended tail. The nucleus is widely described as a "dirty snowball" composed of ice and some rocky debris.
Halley's CometThere is considerable vaporization as they approach the Sun and they develop ion tails and dust tails. The ion tails are almost straight streamers from the nucleus while the usually brighter dust tails are broad and diffuse and curve slightly, lagging behind the radial direction.
The lighter ionized gas atoms of the ion tale cause it to point outward, directly away from the Sun, because the influence of the solar wind is dominant. I take the lower, more focused part of the tail in the image above to be the ion tail. The dust tail is made up of more massive particles and the role of gravity is important. If particles influenced by gravity are moved to an orbit further from the Sun, their radial direction falls behind that of the nucleus of the comet because their orbital period will be longer. The upper part of the Halley image would then appear to be the dust tail - you can see a slight curvature. In its most visible phase close to the Sun, the comet has a small solid nucleus and a ball of gas around it called the coma. Comas have been found to be on the order of 100,000 km in diameter at their maximum size, comparable to the largest planets. Most aof the light reflection is from the coma. Surrounding the coma and the visible tails is a hydrogen envelope which may extend millions of kilometers. The light from comets is purely reflected light; like the planets, the comets produce no light of their own.
Current models of the nuclei of comets view them as balls of loosely packed ices, a cold mixture containing gas and dust. The dust is thought to be trapped in a mixture of methane, ammonia, and water ice. The smaller moons of the outer solar system are similar in constitution. Since they spend most of their time far from the Sun, their temperatures are thought to be a few tens of kelvins. Chaisson & McMillan suggest a core temperature of 200K and a surface temperature on the order of 350K for Halley when it made its close approach to the Sun.
The short-period comets (less than 200 years) are thought to originate in a region of the solar system out past the orbit of Neptune called the Kuiper belt (30 to 100 AU). Most of them are found to have prograde orbits (in the same orbital direction as the planets) and to be close to the ecliptic plane. The Kuiper belt is described as a region of asteroid-like comets, most of which travel in roughly circular orbits. It may be that occasional close encounters between comets or the cumulative gravitational pull of the outer planets brings one into the higly elliptical orbit which brings it close to the Sun.
Other comets, characterized as "long-period comets", are found in random orientations with respect to the ecliptic plane. They are thought to originate in a large "cloud" of objects in a region perhaps 50,000 AU from the Sun called the Oort cloud. This image of comet Schwassmann-Wachmann 3 taken by Tim Puckett of Villa Rica, Ga. USA. It was obtained with a 12" Lx200 working at f/7. This is a 300 second exposure taken on 12-01-95 .
What does an orbit of a comet look like?
Comets orbit the sun, and, in general, their orbits are an elipse with a very long major axis. They make a trip deep into the outer reaches of the solar system, and then, after may years, travel back past the planets to loop around the sun. Then they head back out into the outer solar system again.
Where do the particles of energy of the comet come from?
The particles of energy in a comet mainly come from the solar wind interacting with the comet's nucleus and surrounding coma. The solar wind is a stream of charged particles emitted by the Sun that affects the comet's ion tail and can cause energy release through processes like ionization and excitation.
Comets are made of ice and dust, so they are not safe or edible for humans to eat. Additionally, comets travel through space at extremely high speeds and temperatures, making them dangerous and impossible to consume.
What occupanies the space between the planets?
First, dust, debris and gases, left over from the formation of the sun and the planets.
Second, gases and radiation produced by the sun (eg. solar wind).
Third, various spacecraft and other technological artifacts, shot into space by humans (eg. the Pioneers and Voyagers launched by NASA).
How do comets meteorites and asteroids differ?
Comets are icy bodies made of dust, rock, and frozen gases that orbit the Sun, meteorites are asteroid fragments that have entered Earth's atmosphere and landed on its surface, and asteroids are rocky bodies that orbit the Sun primarily in the asteroid belt located between Mars and Jupiter.
Do you need carbon dioxide in cells to survive?
No, cells do not need carbon dioxide to survive. In fact, excessive carbon dioxide can be harmful and toxic to cells. Cells require oxygen for respiration, which is essential for producing energy.
How many hours are in a day on a comet?
It all depends upon the rotation of the comet, as the length of a 'day' is determined by the rate of rotation and the position from which it is measured on the comet itself as well as the current position of the comet in relation to the nearest 'sun'. There is no simple answer.
How long does it take asteroids to rotate?
it depends if you mean one that was in the asteroid belt if so then its about 3AU away and if earth is about an AU away from the sun then i would say it takes around 2 to 5 earth years to make one full revolution.
What is the general path of comets?
Comets generally follow an elliptical path around the Sun, taking them from the outer edges of the solar system to close approaches to the Sun. As a comet gets closer to the Sun, the heat causes it to release gas and dust, forming a glowing coma and sometimes a tail that points away from the Sun due to solar wind. After their close approach, comets move back towards the outer solar system.
Why do asteroids comets and meteors fall suddenly?
Asteroids, comets, and meteors fall suddenly towards Earth due to gravitational forces. When they come within range of Earth's gravity, they are pulled in, causing them to fall towards the planet at high speeds. Additionally, factors like orbital dynamics and collisions in space can also contribute to their sudden approach.
Why does a comet spend little time in the inner solar system?
A comet's orbit is very elliptical -- it is a very elongated oval. The sun is at one focus of the ellipse, and typically the other focus is somewhere beyond the orbit of Pluto, in the Oort Cloud. Kepler's Laws tell us that a body orbiting the sun will move more quickly when it is closest to the sun, in this case when it is in the inner system. So a comet will move very slowly at the outer end of its orbit, speeding up as it falls towards the Sun, whip through the inner system at a great speed as it rounds the sun, and then slow down as it heads back out to the cold. Because the orbit is so very eccentric, it takes far longer to travel through the far end of it than through the inner system; a typical case would be a comet with a 70-year period that spends only a week in the inner system each orbit.
What is the gravity for Halley's comet?
each crat er is about 1 km in diameter, Halley's comet's mass is 1017 G, ut has an average density of about 09.3 G/CM3
Does Halley's Comet have rings?
No, Halley's Comet does not have rings. It is a periodic comet that orbits the Sun every 75-76 years, and its nucleus is surrounded by a glowing coma and a tail formed by dust and gas particles as it gets closer to the Sun.
When Halley's comet and the Hale-Bopp comet next return for viewing from Earth?
Halley's comet will next be visible from Earth in 2061, approximately every 76 years. Hale-Bopp, on the other hand, has an orbital period of about 2,532 years, so it won't be visible again from Earth until around the year 4385.
What shapes the comets tail into a shimmering tail?
The tail of a comet is shaped by the solar wind, which pushes the gas and dust particles emitted from the comet's nucleus away from the Sun. The particles are ionized by sunlight and are then affected by the Sun's magnetic field, forming the distinctive shimmering tail.
How much did the goce satellite cost?
The cost of the GOCE satellite mission was approximately 350 million euros.
Who lights the stars in the sky when they blow out?
Stars are not literal flames that can be "blown out." Stars create light through nuclear fusion in their core, so they do not need to be relit like a candle. Once a star exhausts its fuel and reaches the end of its life cycle, it may undergo changes such as becoming a white dwarf, neutron star, or even a black hole.
Comet Hyakutake, officially named C/1996 B2, made its closest approach to Earth in March 1996 and is not expected to return within our lifetime. Its orbital period is estimated to be over 70,000 years.
When will Shoemaker levy 9 return?
Shoemaker-Levy 9 will not return as it broke apart and collided with Jupiter in July 1994. It is not expected to reassemble or return as a single entity.
