How much comet and asteroid in our solar system may have come from another solar system?
Question:
Answer:
The odds that any comet or astroid in the solar system comes from another is very very slim (read as nearly impossible).
Everything in the solar system is made of matter that congealed billions of years ago. The largest chunks formed the sun and the eight planets. The rest formed moons, asteroids, etc, with the matter at the very edge forming what is known as the Kuyper Belt.
While we aren't entirely certain from whence comets come, we have a pretty good idea that their source is the Kuyper Belt -- icy objects on the outer edges of our solar system which sometimes get knocked off course and end up on a new trajectory that takes them through the system and much closer to the sun.
As to any other solar system? The closest star is 4.22 light years away (read as about 39,925,420,000,000 km or 24,809,380,000,000 mi). That's a VERY long distance and it's highly unlikely that anything from another system would have been pulled into ours, even if ejected forcibly from another solar system (it'd most likely simply be sucked right back in).
Short answer to your question: None.
comets are formed outside our universe, asteroids are formed in the kuipter belt inside our universe. pick up a science book.
While it is possible that some comets may come from extra solar planetary systems it is quite remote. Comets are thought to come from the Oort Cloud an immense spherical cloud surrounding the planetary system and extending approximately 3 light years, Within the cloud, comets are typically tens of millions of kilometers apart. They are weakly bound to the sun, and passing stars and other forces can readily change their orbits, sending them into the inner solar system or out to interstellar space. The asteroid belt and Kuiper belts are formed from material left over from the formation of the Solar System
Probably none.
The Oort Cloud, Kuiper Belt, and Asteroid Belt are all remnants of the solar system creation process that started from a short-lived star that went supernova (some 4.5 billion years ago... roughly).
The nearest planet-bearing star (other than our sun) is about 15 light years away. That's quite a distance for some rocks to be hurled and captured by our sun's gravitational force. There are other stars closer to us but planets have not been detected around them, hence, they would not be considered solar "systems".
By the way, while we know comets reside in and come from the Oort Cloud and Kuiper Belt, latest theory suggests that some also reside in or originated from the Asteroid Belt.
ok comets arent from another universe and a small fraction of them would be from outside our solar system. Generally speaking they come from the Oort cloud (of which pluto is a member) and are tugged in by the gravitational pull of the sun and planets now and then. SOME could be from elsewhere but they would make up a very small percentage of all comets.
Generally speaking these have a high ice content.
Asteroids are remenants of the acretion stage of the solar system and are rock. They are the things that bombarded one another until planets formed. They are held in place in a ring more or less by the gravity of the earth. not many of these would come from elsewhere (and any that did would almost certainly be sucked up by jupiter.
Solar systems like ours form in the same way,each is isolated from each other by light years.
The chances of a stray piece of rocky material going from one solar system to another is virtually nil.
Maybe towards the galactic center it could happen but not out here.
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