<p>No.</p>

<p>Small red dwarfs may be fully convective. Larger stars like the sun have a region in which the energy is transferred by radiation. So in small red dwarves, the star becomes fully mixed.</p>

<p>Red Giants are quite different and are large and old stars, swollen by their powerful cores.</p>

<p>Both red and yellow stars produce large amounts of neutrinos. Yellow stars produce more than red dwarfs because they are more powerful. Red Giants would produce more than yellow dwarfs, as they more powerful.</p>

<p>Nothing that could explain superman.</p>

CC BY-SA 3.0
2017-06-27T12:20:14.890Z
Oh, ye of little faith.  Clearly the difference in the hyperspectral irradiance curve, in combination with a planet whose crust is primarily Kryptonite, is the reason Kal-El and his entire species have no superpowers at home.  Freed of those effects elsewhere in the galaxy, powers re-assert themselves.
Carl Witthoft
CC BY-SA 3.0
2017-06-27T14:35:56.573Z
@CarlWitthoft _Actually_ superman loses his powers under the light of a red sun, even in the absence of Kryptonite. :)
Sidney
CC BY-SA 3.0
2017-06-27T14:43:12.220Z
@Sidney ah, you are correct.   My fault for not having read a Superman comic in the last 50 years :-(
Carl Witthoft
CC BY-SA 3.0
2017-06-27T14:44:21.087Z
Ah, that would be the source of it. I suggest putting down Aristotle and Tolstoy and pick up some _actual_ literature. =P
Sidney
CC BY-SA 3.0
2017-06-26T17:51:14.933Z
2017-06-27T05:33:05.377Z
2017-06-27T05:33:05.377Z
James K
<p>As time goes by, explanations for unusual things that exist in fiction get disproven. We know radiation probably isn't going to create a Giant ant that destroys everything, we're pretty sure we can't use ray guns, and the idea that falling into a black hole would put you face to face with Ming the Merciless is laughable.</p>

<p>Comic nerds might have guessed from the title why I'm asking, but I'm curious if there could still be any reason to latch on to to explain why superman is powered by a yellow sun, but not a red one? Does the higher temperature of a yellow sun create a higher level of some concentration of exotic particles, or once you get to the point of [solar fusion] is the output pretty much exactly the same?</p>

<p>Note: This question is not about superman, or his powers, just if there is any (temperature aside) meaningful difference between a yellow and red sun (that could be conveniently used by DC to still justify superman's powers).</p>

CC BY-SA 3.0
2017-06-27T12:20:39.073Z
I'm voting to close this question as off-topic because this belongs on WorldBuilding.SE
Carl Witthoft
CC BY-SA 3.0
2017-06-27T14:31:51.073Z
I don't agree that this question should be moved to Worldbuilding. There's virtually no reason to migrate a question if it's not off-topic on the original site, and I can't see how this question is off-topic on Astronomy.
HDE 226868
<the-sun><astrophysics>
Other than relative temperatures, is there any difference between a red sun and a yellow sun?
Sidney
# Other than relative temperatures, is there any difference between a red sun and a yellow sun?

(Asked by: username_0 on 2017-06-26)

As time goes by, explanations for unusual things that exist in fiction get disproven. We know radiation probably isn't going to create a Giant ant that destroys everything, we're pretty sure we can't use ray guns, and the idea that falling into a black hole would put you face to face with Ming the Merciless is laughable.

Comic nerds might have guessed from the title why I'm asking, but I'm curious if there could still be any reason to latch on to to explain why superman is powered by a yellow sun, but not a red one? Does the higher temperature of a yellow sun create a higher level of some concentration of exotic particles, or once you get to the point of [solar fusion] is the output pretty much exactly the same?

Note: This question is not about superman, or his powers, just if there is any (temperature aside) meaningful difference between a yellow and red sun (that could be conveniently used by DC to still justify superman's powers).

**Tags:** the-sun, astrophysics

> **Comments:**
> **username_1**: I'm voting to close this question as off-topic because this belongs on WorldBuilding.SE  
> **username_2**: I don't agree that this question should be moved to Worldbuilding. There's virtually no reason to migrate a question if it's not off-topic on the original site, and I can't see how this question is off-topic on Astronomy.  

---

## 1 answers

### Answer by username_3 on 2017-06-26. Score: 3 | Accepted answer

No.

Small red dwarfs may be fully convective. Larger stars like the sun have a region in which the energy is transferred by radiation. So in small red dwarves, the star becomes fully mixed.

Red Giants are quite different and are large and old stars, swollen by their powerful cores.

Both red and yellow stars produce large amounts of neutrinos. Yellow stars produce more than red dwarfs because they are more powerful. Red Giants would produce more than yellow dwarfs, as they more powerful.

Nothing that could explain superman.

> **Comments:**
> **username_1**: Oh, ye of little faith.  Clearly the difference in the hyperspectral irradiance curve, in combination with a planet whose crust is primarily Kryptonite, is the reason Kal-El and his entire species have no superpowers at home.  Freed of those effects elsewhere in the galaxy, powers re-assert themselves.  
> **username_0**: @CarlWitthoft _Actually_ superman loses his powers under the light of a red sun, even in the absence of Kryptonite. :)  
> **username_1**: @username_0 ah, you are correct.   My fault for not having read a Superman comic in the last 50 years :-(  
> **username_0**: Ah, that would be the source of it. I suggest putting down Aristotle and Tolstoy and pick up some _actual_ literature. =P  

---

