why does we had only one sun?

Answer 1

That's all we could afford at the time.

Answer 2

I'm going to through this out there it is a theory I have I'm no scientist but I am a thinker. 1st of all no question is stupid only the answer. The sun moves throughout the Galaxy in it's own orbit. meaning the satillites orbiting the sun are catching up making all the planits travel in an eliptical path around the sun from closer to further. their are now 2 focal points to our solar system. the sun is at 1 and their is nothing at the other. If their was a desurbance in the sun's usual neclear activity strong enough to split it we would then (if all the variables were just right) have a second sun at the other focal point in our universe,but this would in fact make the 2 suns orbit each other and raise the earth's temperature (just the spliting would do this so we would never see exactly what would happen) and the 2 suns would probrably collide causing 1 of 3 possibilitys. Either the new moltin hunk would form a new solar system, the new sun may lose intensity and become a red jiant, or gain enough energy to super nova. Like I said Im no expert and I may have just given you a stupid answer but anything is possible if the variables are right if you find out something differant from a credible sorce let me in on it.

Answer 3

This is the anthropic principle at work again ...

Most likely, having a single star in our solar system made it possible for life to evolve. With two suns it would be even harder to find a planet with a stable orbit at just the right distance from both stars to maintain an environment suited to life.

However, the very fact that we can ask the question means we are in an unusual position (ie our own existence) and so we should not assume that the circumstances we find ourselves in are the average conditions.

Maybe a better way to put your question would be:

what are the chances that human life would have appeared in a stellar system with 2 suns, or even three!

Of course - I don't have the answer to that but I bet it's something even more remotely improbable that the chance of human life appearing in a single sun system!

Answer 4

Key point our Sun is star, just like the small points of light you see in the sky at night. The sun makes up 99.8 % of our solar systems mass, If there were two of them life would not be able to exist on our planet. Who knows we may not be able to have a planet if there was another Sun. Please keep in mind that our entire solar system revolves around the Sun, due to its enormous size and magnetic pull.The reasoning behind us having one sun is unknown. There may be other two star solar systems somewhere in our universe, however, our solar system is so uniquely balanced that the presence of another star would not permit life on Earth.

Answer 5

All the other questions are good but they all miss one important theory that for quite awhile it was thought that we have a second star but that it was too dim to be seem or detected outside the orbit of Pluto, but this theory is just that a theory its not actually been proven.

But in answer to your main question its just a coincidence that we have 1 star, the Sun we could of had a second star if there was enough material to make another star.

look at the following websites for more information.

http://spiff.rit.edu/classes/phys301/lectures/star_birth/star_birth.html

http://www.solarviews.com/eng/sun.htm

I hope that this helps

Answer 6

our solar system developed with only one sun. probably due to the energy distribution present along with the motion of the energy during the formation of our solar system. Some systems do have two stars see here...

http://www.nasa.gov/mission_pages/spitzer/multimedia/spitzertwostar.html

and here...

http://www.space.com/scienceastronomy/060112_binarystar_planets.html

if we had two suns in our solar system, life one earth would certainly be different then it is today or perhaps even non-existent.

Answer 7

I lol'd at the phrasing of this question.

To answer your question - Because thats how this particular solar system formed. If we had more than one star (for example as in a twin star system) then it would have seriously altered the formation of life on this planet and the formation of the rest of the planets.

Answer 8

We very nearly had two stars in the solar system. Jupiter is a failed star that doesnt quite have enough mass to start the nuclear reactions.

Answer 9

because there just happens to be one sun in out solar system. A sun is a star.

Answer 10

Because burning up two of them would leave us roasted - there would not be an ocean - we'd be like Mars bar water. The other planets actually reflect their light onto us and their heat rays travel on solar wind to its not always cold in space.

Answer 11

WE, The universe, have many suns. At least a million.




JK