How are comets formed?

Question

plz give source too.

Answer 1

Theory suggests that comets are matter that existed as solar system was forming but were too distant to be pulled into the central mass by gravity of the denser interior. They were however held in orbit by sun's gravity. Comets like most solid matter in known universe were condensed as gravity pulled things together. Given enough time all matter will give into gravity unless acted on by stronger force.

Answer 2

Having already scanned the answsers received thus far, let me say that the information provided by "Virus" is fairly close to the mark. There is a natural affinity of objects for each other which makes them try to join up. Virus referred to this happening. What makes this interesting to consider is the place that this joining together happened.

If the joining happened when the materials were extremely hot and molten, then the joined together mass might well form into a sphere. If the sphere is spinning, the heavy parts would move to the center of the molten mass forming a core, and the lighter materials would move outward. We could expect this situation to continue until the object moved far enough out into space to begin cooling off. When cooled enough, it is possible that gas molecules might be collected and form into water which then freezes into ice that collects onto the surface of the object. This collection of ice would continue until the object passed through an atmosphere which was dense enough to cause the friction which produces the glowing light and comet tails (meteor streaks) seen by Earth bound observers.

Answer 3

Our entire solar system, including comets, formed from the collapse of a giant, diffuse cloud of gas and dust about 4.5 billion years ago. When the cloud started its collapse, it was rotating very slowly. But the cloud began to heat up and whirl faster as it shrank, just as twirling ice skaters spin faster by bringing their arms close to their bodies. The fast rotation helped ensure that not all of the material fell into the core. Instead, the material in the fast-spinning cloud spread out into a flattened disk. Meanwhile, the temperature in the dense, central core was heating up. The core eventually became so hot that it ignited nuclear fusion, creating the Sun. The disk's outer regions, however, were quite cold. The low temperatures allowed water to freeze onto dust grains, which grew in size to make clumps. Some clumps eventually reached a size of several kilometers in diameter. The clumps then began merging, probably by collisions, and formed the planets. Many theories abound about how these clumps became planets. This topic is at the forefront of scientific research. Whatever the details, large planets were created from the buildup of clumps of matter and gas from the surrounding cloud. But some of this matter did not merge into planets. Within the last decade, for example, astronomers discovered leftover clumps, called planetesimals, in a region beyond Neptune, although no large planets formed beyond that planet. These bodies form an outer asteroid belt at the edge of the solar system, called the Edgeworth-Kuiper belt, named for the scientists who proposed its existence in the 1950's. Recent calculations show that this asteroid-rich Kuiper belt (as it is now known) is probably the source of most of the short-period comets, such as Halley's comet, which orbits the Sun every 76 years.

Answer 4

by skill of how, the tail/s is/are constantly oriented far off from the sunlight, simply by fact it truly is the photograph voltaic wind that somewhat blows them far off from the gravitational pull of the comet. If there have been no photograph voltaic wind doing that, the outgassing debris might only stay in orbit around the comet or ultimately fall decrease back. whilst a comet is receding from the sunlight, the "tail" is somewhat in front of the nucleus. EDIT: thank you Richard, I only realised that bit on the subject of the dirt ultimate in orbit replaced into incorrect. maximum of it truly is ejected previous the comet's get away speed, it is amazingly low for the form of low-mass merchandise. If a spacecraft landed on one, an astronaut might desire to probable take a working leap appropriate off it.

Answer 5

Hard to say. One theory is that there was once a planet between Mars and Jupiter and Jupiter's gravity pulled it apart leaving the asteroid belt and what fragmented and became frozen in space was part of that planets atmosphere and it began to orbit the sun, slingshotting out further and further.

That is one possible explanation.

Others could be fomations of lighter chemicals that freeze in space and vaporize when near the sun just get caught in the gravitational field.

Answer 6

They are found in the Oort Cloud somewhere near the Kuiper Belt.

Answer 7

bulemic angels.