Stubled upon this question. Dont know if its just too obvious to me or if im overlooking something, but..
If all organisms obtain energy from the sun. And according to the conservation of energy, energy is not created nor destroyed, how does the sun obtain its energy?

Fungus recieve energy from radiation

That doesnt answer my question though.

We obtain energy from eating other organisms or all end up at the end of the food chain eating plants or producers. Plants/producers obtain their energy from the sun. If energy is neither creator nor destroyed, where does the sun get its energy from?

Nuclear fusion

But then where did the energy for nuclear fusion and fission come from?

Edit:
At some point, energy had to have been created, yes?

This post was edited by impulse155 on Jul 26 2011 09:07pm

The big bang

well they contend that the sun is basicaly a big ball of gas in constant nuclear reaction. The enegry came from the nebula, the star basically split from it and was sustaining itself.

The sun does not "create" enegry; it is radiating it out into the around surrounding it. Giving us enegry here on earth, but also to the other planets. The enegry can become insignificant in the vastness of space, but is significant here where we have a closed organic system.

At some point, the amount of gas in the sun will be so little that it is overwhelmed. Then i believe it either becomes a super giant or a white dwarf, and either supernovas or turns into a blackhole.

Then I'm sure one will ask the question, what created the big bang?

The im sure someone found out where I was going with this
+1



You say the energy came from the nebula, but then where did the energy from the nebula come from?
You see where im going with this? Torm got the jist of it. Its kinda like evolution, you can trace an evolutionary path so far, but int he end how did it get here when you cant trace it back any farther.
In fact, most evolutionary biologists believe there is a higher power that created them.

In a perfect vacuum it is well-known that virtual particles leap in and out of existence spontaneously. This is experimentally proven, so it's possible that the universe truly did spontaneously create itself from nothing. However, without a quantum theory of gravity, we can't say with any certainty what event it was that triggered the big bang if the entire universe had always existed in the form of a singularity. It would be pretty arrogant to say that we knew exactly what caused it if we didn't have any evidence to support such a claim, wouldn't you say?


That's not true. And even if it were, evolution is not a theory about how life first started.

This post was edited by bentherdonethat on Jul 26 2011 09:48pm