what is the possibility of a planet suddenly forming?

Question

in a percentage would be useful :)

Answer 1

planets don't suddenly form. the process takes quite a while in a young solar system.

in an old solar system if an existing planet was destroyed by a huge collision the remaining pieces could conceivably come together to form a new planet but it wouldn't be a sudden process.

Answer 2

The established planet formation theory dictates that for a planet to form time has to elapse (so 0% for a planet to form suddenly).

This is because material from the disk that surrounds a star has to stick together until it becomes big enough to start accretion mass. Eventually, this will become a protoplanet and later a planet. But that's a lengthy process, it's not sudden.

Answer 3

The formation of a planet is a totally complicated process.The prevailing theory is that they are formed from those remnants of a nebula that do not condense under gravity to form a protostar. Instead, these remnants become a thin, protoplanetary disk of dust and gas revolving around the protostar and begin to condense about local concentrations of mass within the disc known as planetesimals. These concentrations become ever more dense until they collapse inward under gravity to form protoplanets.After a planet reaches a diameter larger than the Earth's moon, it begins to accumulate an extended atmosphere. This serves to increase the capture rate of the planetesimals by a factor of ten.


An artist's impression of protoplanetary disk.When the protostar has grown such that it ignites to form a star, its solar wind blows away most of the disc's remaining material. Thereafter there still may be many protoplanets orbiting the star or each other, but over time many will collide, either to form a single larger planet or release material for other larger protoplanets or planets to absorb. Those objects that have become massive enough will capture most matter in their orbital neighbourhoods to become planets. Meanwhile, protoplanets that have avoided collisions may become natural satellites of planets through a process of gravitational capture, or remain in belts of other objects to become either dwarf planets or small solar system bodies.

The energetic impacts of the smaller planetesimals will heat up the growing planet, causing it to at least partially melt. The interior of the planet begins to differentiate by mass, developing a denser core. Smaller terrestrial planets lose most of their atmospheres because of this accretion, but the lost gases can be replaced by outgassing from the mantle and from the subsequent impact of comets.(Smaller planets will lose any atmosphere they gain through various escape mechanisms.)

With the discovery and observation of planetary systems around stars other than our own, it is becoming possible to elaborate, revise or even replace this account. The level of metallicity is now believed to determine the likelihood that a star will have planets.Hence it is thought less likely that a metal-poor, population II star will possess a more substantial planetary system than a metal-rich population I star.

After reading this theory of the formation of planets you yourself would be able to estimate that the possibility of a planet suddenly forming would be certainly 0%.

Answer 4

How could anybody have figures on the possibility of that? Most planets are nowhere near our solar system, and probably are being formed all the time, but we don't know about it. As to a planet forming in our solar system, I don't think so . . . all of them are billions of years old, and none have shown up since then.

Answer 5

The chance is effectively nil.

Planets are forming in our galaxy (and the rest of the universe) all the time -- but it doesn't happen "suddenly." It takes a long time (hundreds of thousands to many millions of years) for matter to accumulate under gravity's influence, and to get big enough for us to consider it a "planet."

Answer 6

suddenly forming : 0.1%

forming slowly (in about 10 years or whatever): 30%

forming at the rate the easrt formed: 80%

Also depends on where it is forming, I think.

Answer 7

It happens all the time when stars are forming. From the excess matter.

Answer 8

planets dont suddenly form so the percent chance is about .000001% i mean hey anything could happen though so you cant say no.

Answer 9

it would depend on an old plante dying first ti would take years for that to happen...