just a lone star with no moons or planets or any captured bodies what so ever.
2006-08-28 20:11:50 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Almost all stars we can see from Earth are suspected to have planetary systems, but proving it is another matter. Even the ones whose movements indicate something (planets and their gravitational pull), must be acting upon them are only in the theory stage. No planet outside our own solar system has yet been positively identified.
But in reality, chances are very slim such a star exists. They are all most likely to contain planetary systems. So... the answer is yes and no... No, none have ever been found and yes, no one has ever proved that ANY star has a planet (other than our sun).
2006-08-28 20:20:20 · answer #1 · answered by fiveamrunner 4 · 1⤊ 0⤋
Until a few years ago, we didn't know if any other stars HAD planets. There was always an assumption that they were there, but the detection methods were inadequate. Some stars were then known to have what are called proto-planetary disks surrounding them that would one day develop into solar systems. One way of looking at it is that all stars have no planets until we find them, though I doubt any star would form without some sort of planetoids orbiting it.
2006-08-29 03:21:11 · answer #2 · answered by Sir Psycho Sexy 3 · 0⤊ 0⤋
At present, we only have the capability to detect large planets close to nearby stars. But from what we have seen so far, planets appear to be very common.
It is never possible to prove a negative, so it's not possible to say that just because we don't see a planet around a given star, none exist there. "The absence of evidence is not evidence of absence."
On the other hand, there are some types of star clusters and multiple star systems where planets are thought to be unlikely to form or stay, because the gravitational fields of the orbiting stars would remove any orbiting objects.
2006-08-29 13:08:33 · answer #3 · answered by injanier 7 · 0⤊ 0⤋
Yes indeed! There are about 200-billion stars in our galaxy, but so far we've found evidence for planetary bodies around only about 200 of them.
2006-08-29 03:20:22 · answer #4 · answered by Chug-a-Lug 7 · 2⤊ 0⤋
Is not a dumb question.
If we see a planet then we are postive about it.
It is very hard to prove a negative statement in this case.
yes, we have seen many stars without planets.
But if we dont see a planet around a star, we dont know for sure there isnt one.
Get it??
2006-08-29 03:21:57 · answer #5 · answered by dcw13 3 · 1⤊ 0⤋
the stars we see or the images we see,are from billions of years ago,possibly before stars had a chance to form planets.
2006-08-29 04:50:26 · answer #6 · answered by dvdheg 2 · 0⤊ 0⤋
very young stars still may have a lot of hot dust and gas surronding it and have not had ample time for planets to form around these sorts of stars
2006-08-29 03:27:33 · answer #7 · answered by astronomy3001 2 · 0⤊ 0⤋
Most stars meet this definition, to the extent that we can tell...
2006-08-29 03:19:25 · answer #8 · answered by Art_333 2 · 0⤊ 0⤋
Don't know for sure, but it's quite possible, and it's not a dumb question! No question is a dumb question.
2006-08-29 03:15:35 · answer #9 · answered by Anonymous · 0⤊ 0⤋
probably. but they all tend to gather bits of dust.
2006-08-29 03:18:59 · answer #10 · answered by Stand-up Philosopher 5 · 0⤊ 0⤋