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Dr. Stephen O. Nelson


Fusion, solar flares, cosmic rays, radiation in space, and stellar physics questions. Generally, nuclear-related astrophysics, but I can usually point you in the right direction if it's not nuclear-related or if it's nuclear but not astrophysics.

Experience in the area

Just moved from being a physics professor at the University of Texas of the Permian Basin into government work. Doctoral dissertation was on a reaction in CNO-cycle fusion, worked in gamma-ray astronomy in the space science division of the naval research laboratory in the high-energy space environment branch.


Government work as a physical scientist with a nuclear focus.


Ph.D. in physics, research was on nuclear fusion reactions important in stellar fusion, further work on space telescope technology.

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Recent Answers from Dr. Stephen O. Nelson

2016-09-30 big bang:

Wow...that is not a theory.  Theories are actually backed by math and predictions, not just words and percentages.  That's more like...politics.  And no, that's not even in the same weight class as a real

2016-09-24 big bang:

The word "singularity" implies that the laws of physics break down and we don't know what that really is.  So to even ask this question is kind of pointless, because we don't understand the nature of a

2016-07-09 Earth obrit:

The Earth is moving around the Sun due to the curvature of space.  The planets are slowly moving slightly further away from the Sun, in fact:

2016-01-14 Red shift and expanding space....:

Well, it should transition the wavelength of light.  I'll have to look into the math to be sure, but my opinion is that that is true.    The question of the boundary of the universe is more thorny, because

2016-01-12 How much energy would be needed to generate a wormhole?:

You would need something on the order of the energy of an evaporating, spinning, massive black hole.  So imagine something thousands (up to millions) of times the mass of the Sun, then apply E=mc^2 to


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