Do all stars have their own solar system? (like ours)?

Question

What I mean is, do all stars have their own revolving planets?

Can more then one star be in a single solar system? (I thought the very definition of solar system meant 1 star + revolving planets...?

If not, what would that body of space be called?


Apologies for the somewhat vague question - my spacebar is broken so typing is rather a pain. This question alone has taken me 10 minutes to write.


I'm 15 BTW.


any response will be greatly appreciated..

Answer 1

We are only 15 years into discovering extra-solar planets (the first one was in 1992) so an idea of the number of stars that have them is still hard to define: it is too small a statistical sample (246 exoplanets to date) to draw such conclusions yet. Our detection methods are relatively crude and mainly pick up Jupiter-sized gas giant planets orbiting close to their stars. Planets further out and terrestrial rocky planets are a distinct minority among the 246, but this is an inbuilt bias of the way we find them, as gas giants are easier to detect, at present.

Optimistic astronomers think the percentage of stars with planets may be as high as 10%. The fact that planets have been found around Red Dwarf stars is encouraging as 78% of Main Sequence Stars are red dwarfs.

One group of stars that you won't find any planets around are the (fairly rare) blue stars in Spectral class O. According to currently accepted theory, they cannot form.

As regards planets around binary star systems, no reason why not in principle but as far as I know only one such system has been found, to date to have a planet, and its binary parent stars are a pulsar and a white dwarf. The concern might be that they are tugged this way and that, to and fro by two competing gravitational forces from the two stars and stable orbits are hard to achieve.

Answer 2

Our sun is a star so we can say that all stars are in a way "local suns". Some of those stars have planets. Some of those "exoplanets" have been discovered in recent years by measuring the wobbling of the stars that is an effect of planets orbiting that star. Exoplanets are too far away and too dim and too close to their bright "sun" that they might be observed directly. So what we know about those planets is calculated by the wobbling star and also by the sum of the light (star + planet) that may vary due to addition when the planet is at the side of the star - star only, when the planet is behind the star - star minus planet when a big planet is in front of the star and is occulting part of the starlight.

Yes, some stars are orbiting around each other and form a system with two stars at the center. In those systems it's not very likely to have several planets because the gravity in the planet's orbit is not is not uniform and may kick a planet out of orbit.

Answer 3

Because of the way solar systems evolve it is very unlikely a solar system would not contain planets.
A solar system is initiated by rocky debris from a super-nova that crashes into a hydrogen field,dynamically stirring the field into a giant smoke ring like structure that causes the hydrogen to compress and flinging the rocky material away from it.
The hydrogen lights up as a star and the rocky material orbits at different distances.
Two stars could {maybe] occur in the same solar system but it is very unlikely

Answer 4

the nearest star system, alpha centauri, consists of two or three stars (it's not certain if proxima centauri is really part of the system or just passing through). maybe there are planets too, but planets are very hard to see. mostly they're found by 'radial velocity' (the planets cause the star to wobble, and the wobbles are inferred by measuring how the star's light spectrum changes with time) or transit (the planet passes in front of the star and momentarily decreases its brightness).

of the 100 nearest star systems, only 4 have confirmed planets, but that number may increase as equipment and methods become more sensitive.

http://www.chara.gsu.edu/RECONS/TOP100.posted.htm

http://vo.obspm.fr/exoplanetes/encyclo/catalog-all.php?&mode=15&more=yes

Answer 5

Hi Michael.

Not all solar systems are like ours (1 Star + Planets), most of them are double star systems, this means there are 2 stars orbiting each other. This means it is much harder to have planets because the center of gravity it´s moving all the time. There are all kinds of systems.
*Single star without planets
*Single star with planets
*Double star without planets
*Double star with planets

Answer 6

Dual stars are in existence orbiting each other, it is possible that planets could be orbiting these stars.

Answer 7

Michael. If you are 15 and truly interested in these things, get "Cosmos" by Carl Sagan. The series is about 20 hours long but is VERY, VERY informative. You can get it in either DVD or VHS format. Worth every cent!!!!

Good luck with your studies.

Answer 8

Have you tried Earth 4 Energy DIY system? Get right here : http://createhomesolar.com . This could certainly assist person!

Answer 9

no not all stars have planets