Difference Between Asteroids And Comets

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Difference Between Asteroids And Comets

Monday, June 22nd, 2009 Subscribe To Our Feed

The only thing we like the most in the planet of astronomy is a good mystery. And if there was ever a mysterious and yet very robust force of nature that we witness in the night skies, it is the coming of the powerful comet.

The arrival of a comet within view of Earth is an event of global significance. Witness the large media attention the Haley or Hale-Bopp have had when they have come within view The sight of these fantastic space objects is concurrently scary and shock provoking.

Above all, it is during these comet viewings the astronomer comes out in every one of us. But what’s a comet? Where did it come from? And how does it get that superb tail?

We should never confuse comets with asteroids. Asteroids are little space rocks that come from an asteroid belt between Mars and Jupiter. Whilst still quite shocking to see, they diminish in comparison to the arriving of a comet. Asteroids also have received substantial study by the systematic community.

Not as much is commonly known about comets. As a rule, comets are significantly bigger than asteroids. The composition of a comet is a mixture of nebulous, gasses, ice, dust and space waste. One scientist called the composition of a comet as similar to a “dirty snowball” because the composition is so various and changeable. The center or nucleus of a comet is generally quiet solid but the “snowball” materials regularly make a “cloud” around that nucleus that can become quite giant and that extends at great lengths behind the comet as it moves thru space. That trailing plume is what makes up the comet’s superb tail that makes it so exciting to observe when a comet comes within view of Earth.

The origins of comets is similarly puzzling. a number of concepts about where they come from but it is clear that they come from outside our solar system, somewhere in deep space. Some have speculated they are pieces left over from the organization of planets that get loose from whatever gravitational pull and are sent flying across space to eventually get wrapped up in the gravity of our sun bringing them into our solar system.

Another theory is that they come from a gaseous cloud called the Oort cloud which is cooling out there after the organization gaseous cloud called the sun. As this space debris cools, it gets organized into one body which then gathers acceptable organization of the gravity of arranged into a fast moving comet plunging toward our sun. However, thanks to the strong gravitational orbits of the various solar system, the comet does not always right away collide with the sun and often takes on an orbit of its own.

The life expectancy of comets varies widely. Scientists refer to solar system, the comet that is predicted to burn out collide with the sun within two hundred years as a short period comet whereas a long period comet has a life expectancy of over two hundred years. That may appear to us as earth dwellers but in terms of stars and planets, this as a brief period comet while a space object indeed.

Scientists across the globe have put together some pretty impressive probes to find out more about comets to aid our knowledge of these visitors from beyond. In 1985, for instance, the US a probe into the path of the comet Giacobini-Zinner which passed thru the comets tail gathering amazing systematic data about comets. Then in 1986, a global collation of scientists managed to launch a probe that was able to fly close to Haley’s comet as it passed near Earth and continue the research.

While scifi writers and tabloid newspapers like to alarm us with the possibility of a comet impacting the earth, scientists who understand the orbits of comets and what changes their paths probe us this is improbable. That is good because some comets reach sizes that are the size of a planet so that impact would be devastating. For the moment, we can enjoy the fun of seeing comets make their rare visits to our night sky and wonder earth, scientists who understand the spectacular shows that these visitors from beyond put on when they are visible in the cosmos.

What do you know about Jupiter, Venus, or Mars? At planet-facts.com, all the important facts are there and you can compare all nine planets in our solar system. Make sure to also read about Neptune facts.

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