An analysis of the characteristics of halleys comet in our solar system

As the comet approaches, an enormous amount of resource material will be available for teachers. We will review the best of these in future issues. In the meantime, here is a selection of good resources that are already available.

An analysis of the characteristics of halleys comet in our solar system

Just as meteorites and asteroids, comets belong to the small bodies of Solar system. Their history, physical and orbital characteristics have been studied for a long time, and although many comets are well-observed, some characteristics of these bodies remain unknown.

While most of space bodies did not move, or followed a trajectory, comets appeared unpredictably from nowhere which filled ancient people with horror. The earliest records of comets date from BC, and the earliest comet ever noticed was called Comet Halley. In the period when scientific knowledge was poor, all the inexplicable phenomena were regarded as mysticism.

Moreover, people often blamed comets for natural disasters, accidents, death, diseases etc. Finally, appearance of a comet could be interpreted as an omen of Armageddon. However, hundreds of years ago, there were people who believed that comets were purely natural phenomena which did not influence life on Earth in any of the ways mentioned above and who said that comets should have their own place in the classification of celestial bodies, because they had their own trajectory and did not die out.

Up untilpeople thought that comets existed in the atmosphere of the Earth, but Tycho Brahe concluded that they travelled beyond it. Later, there were many other scientists, each of whom was closer to understanding of what a comet was.

Just because they have water in their chemical composition, some scientists claim that this might have been a comet which started life on our planet. Comets can only be seen when they are close to the Sun, because they have complex orbits. According to Arnet, active comets consist of such parts as nucleus, coma, hydrogen cloud, dust tail and ion tail.

The nucleus consists of ice, dust and other organic materials. When a comet approaches the Sun, the ice in it starts melting, therefore, coma is formed. The shape of the tail depends on the nature of the particles and how they are influenced by gravity. Some comets may have more than one tail.

Despite the fact that, due to their small sizes, most comets cannot be seen from our planet without telescopes, some of them reflect the sunlight, so people can observe them with the naked eye.

This means that younger comets melt faster than the older ones which accumulate refractory particles on their surface. So, after a comet completes the orbit many times, volatile compounds cover its surface preventing the ice from evaporating.

Such surface might have holes and cracks on it.

An analysis of the characteristics of halleys comet in our solar system

Generally, a life cycle of a comet consists of such periods as departure, extinction, breakup and collision. So, having lost all its ice, a comet turns into a body similar to asteroids or break up into dust. It is also worth mentioning that some comets cause meteor showers, because they leave debris.

An example of this could be the Perseid meteor shower. Moreover, some comets have the orbits which interfere with other planets or their satellites, and many craters resulted from this process.

Physical characteristics

Comets are also classified according to their orbital characteristics. Based on the duration of an orbit around the Sun, they are short-period, long-period and single-apparition comets. The first two types need less and more than hundred years respectively to complete the orbit.

Unlike planets and most asteroids which follow the same elliptical trajectories, thus enabling people to predict them, comets also revolve around the Sun, following oblong elliptical orbits.

Still, they cannot follow precise conic sections, because there is the gravitation of the planets of the solar system which obviously influences the way a comet moves. An actual way of a comet is winding and it is possible to calculate the orbit only approximately. Comets are usually named after those who discover them.

[BINGSNIPMIX-3

The end of the twentieth century was marked by the considerable interest in these celestial bodies. In all the astronomers concentrated on Shoemaker Levy Comet which broke into many pieces.

Halley's Comet Returns in Bits and Pieces | Science Mission Directorate

They fell on Jupiter causing great disturbance in its atmosphere. Inthere was Hyakutake Comet, one of the brightest objects in the sky for a few weeks.The most famous comet is Halley’s Comet, which travels the solar system every years.

The end of the twentieth century was marked by the considerable interest in these celestial bodies. In all the astronomers concentrated on Shoemaker Levy Comet which broke into many pieces.

Top Stories

With the comet going so fast, these materials are forced behind the comet, forming a long tail of dust and gas. Comets are cold bodies. We see them only because the gases they are composed of glow in the sunlight.

An analysis of the characteristics of halleys comet in our solar system

All comets are regular family members of the solar system family. They are bound by gravity to a strict path around the solar system. Minerals formed near the Sun or other stars were found in the samples, suggesting that materials from the inner regions of the solar system traveled to the outer regions where comets formed.

Another NASA mission, Deep Impact, consisted of a flyby spacecraft and an impactor. In , the last time Comet Halley swung past the Sun, solar heating evaporated about 6 meters of dust-laden ice from the comet's nucleus.

That's typical, say researchers. The comet has been visiting the inner solar system every 76 years for millennia, shedding dust each time.

Halley's Comet returns to the Sun's vicinity every 76 years in an elliptical orbit.(SeeFig 23, Freedman and Kaufmann, Universe, 8th ed.) The main characteristics of our solar system are. four small planets close to the Sun and four large planets far from the Sun.

In our solar system,which of the following planets is not a member of the. Based on our understanding of own solar system which of following would be most suprising to observe in another solar system The planets nearest to star have lower density than planets farther out All of following methods used by astronomers to detect and study exoplanets except.

Comets: Facts & Overview – SchoolWorkHelper