Is it possible that there are planets as big as our sun or even bigger?

Question

Is it possible that there are planets as big as our sun or even bigger?

Answer 1

I like to think so.

Answer 2

I've seen a slide show that shows other suns that are a lot bigger than ours. Even if they were false, the universe is very large and humans can't reach very far yet, so there probably are planets bigger than the sun.

Answer 3

No.  Any body as large as the sun would become a sun.  Gravitational pressure would act of the body causing it to contract.  The body would heat up.  At the core temperatures would rise to the point where fusion of hydrogen would commence. The energy would gradually heat the remaining body, converting it into plasma.  After a few thousand years  a star would be born.

Answer 4

oh yes it is quite possible. compared to other objects in our universe, the sun is actually quite small as star. we haven't observed any exoplanets that are bigger than our sun, but keep in mind we have only viewed a handfull... 307 to be exact.

and in theory, the size of the star will affect the average mass of the planet in it's planetary system. so the bigger the star, the bigger the planets. but this is just a theory, and has not been proven.

brown dwarfs could POSSIBLY be a planet type that can exceed the mass and the size of the sun, but we have not observed any.

so yes, it is very possible.

EDIT: Selena was on the right track a bit, but kind of got confused. size and mass is not the only factor to differentiate a planet from a star. if a planet, isn't orbiting a star, its not a planet. and the sun is very small compared to other stars in the universe. i think someone else pointed out a video that was a good example. nuclear fission has to be occuring in a celestial body, for one example, for something to be considered a star. there is an entire list of other qualifications. i think she thinks that the sun is as big as they come... but that is completely wrong, but a common way of thinking.

Answer 5

Yes it is definitely possible becoz there are over a trillion stars and although we have researched only 307, which are bigger of course, there are still bigger stars than our sun.

if confused about mass sustainment, no problem you could have a bigger star by 1 cubic cm and nothing would happen.

It would STILL be bigger.

Answer 6

I don't think so... It's mass would be too great to sustain it.

Answer 7

Possible...'cuz in this universe, anything is.

Likely...no; the density would cause it to either collapse into a neutron star if it were a rocky body, or ignite a fusion reaction turning it into a main sequence star if it were a gaseous body.

Answer 8

Heres a link to a video to show you how small the sun is:

http://spikedhumor.com/articles/125779/T...

Answer 9

My answer to your question: No.

One of the characteristics that separate a planet from a star is size. In a star, the mass (and hence, the gravity in the core) is so great that temperatures become hot enough for nuclear fusion to occur. The process of nuclear fusion is what allows the star to "fire up" and produce heat and light.

Planets are not heavy enough and do not have sufficient gravity to make temperatures hot enough for nuclear fusion to occur. Their small size is what causes them to be planets.

In fact, there are objects in the universe known as brown dwarfs -- slightly bigger than planets, but smaller than true stars... which I'd like to think as "objects that are almost stars, but not quite." They are capable of producing some energy, but not to the degree of stars. Why? Because they are not big enough. If they had become bigger, they would have become stars. Just wanted to share to make a point.

Anyway, if a "planet" becomes as big as the sun (or even bigger), it would have become a star, and no less.

Edit: i vote scienceman :)

Answer 10

its a fact that there are planets bigger than our sun