2007-05-03 04:30:30 · 13 answers · asked by yahyahwright 1 in Science & Mathematics ➔ Astronomy & Space
I think you may mean something a bit more precise i.e. of the many stars there are in our galaxy, the Milky Way, or in the universe as a whole. are any of those stars Sun-like i.e. like our Sun in terms of their size and temperature and luminosity? (And similar chances of supporting life on their planets if they have some?)
The Sun is a Class G star, and is a relatively small Main Sequence star fusing hydrogen in its core. This gives it a G2 V classification. G stars comprise about 8% of Main Sequence stars, so with 7 x 10^22 stars in the universe, there are approximately 5,6 x 10^21 G-stars to choose amongst!
Other nearby G-classification stars include:
(1) Alpha Centauri A which is 4.3 light years away, magnitide -0.01 and another G2 V star like our Sun It is the 4th brightest star in the sky.
(2) Tau Ceti, which is 11 light years away and magnitude 3.41 and G8 V.
(3) Capella which is a binary star, the two components are G8 and G0 and at a distance of 42 light years. It is the 11th brightest star in the sky.
2007-05-03 04:49:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
There is a sun in every solar system, except it is called a star. The definition of a solar system is planets rotating a star. However, as far as we can tell, not all stars have planets rotating around them.
2007-05-03 06:42:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
First let's define "solar system." That's one or more stars with at least one planet in orbit. Okay, with that out of the way, as of 3 May 2007 we've discovered a total of 232 other solar systems.
2007-05-03 06:14:09 · answer #3 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
Course there are other Suns in other solar systems. A Sun is a star and there are billions of stars i our galaxy. Lots of stars have exoplanets around them.
2007-05-03 04:47:27 · answer #4 · answered by s s 2 · 0⤊ 0⤋
Every star is a sun. There are stars with planetary systems. With more powerful instruments now, astronomers are able to detect planets around the stars.
2007-05-03 05:46:05 · answer #5 · answered by StandTall 4 · 0⤊ 0⤋
Not to be too picky, but...technically, there's only one "Solar" system - ours. It's named after our star, Sol.
Other systems of stars and planets are stellar systems.
We've seen lots of evidence that our system is not unique at all, other than the fact that there is life here, and we haven't found real evidence of that anywhere else.
2007-05-03 05:06:30 · answer #6 · answered by Anthony J 3 · 0⤊ 0⤋
Yes.
Every star in the night sky is really another Sun. And some of those suns have planets orbiting them. Probably most of them do, but we don't know that for sure.
2007-05-03 04:35:02 · answer #7 · answered by campbelp2002 7 · 1⤊ 0⤋
Yes, there are several, and those are just the ones we know about. In fact, we know of about 230 planets, orbiting other stars, outside of our own solar system.
2007-05-03 04:34:07 · answer #8 · answered by Brian L 7 · 0⤊ 1⤋
We already know that there are other solar systems. We have detected well over two hundred other planets that are revolving around other star.
2007-05-03 04:57:17 · answer #9 · answered by Spilamilah 4 · 0⤊ 1⤋
The sun is a star. There are trillions of stars in the universe. So, yes.
2007-05-03 07:29:36 · answer #10 · answered by Anonymous · 0⤊ 0⤋