The portion of the story I wrote:
EMMISARY TO THE SUN WORLD
(synopsis)
Of the many alien races discovered by human explorers, the humanoids of Epsilon Orionis are unique. They can absorb and manipulate pure energy with their metallic bodies. Earth initiates a secret operation to obtain the technology. Eager to succeed, Ambassador Spanner Templeton, Captain Randall, Lieutenant Buck Owen and First Mate Milo Orrington secretly guide the crew of the Dreadnought Apollo and a cohort of marines through their conversion to metallic humans regardless of the consequences.
A xenophobic cabal of humans has opened a gateway to another dimension. In a misguided effort to preserve the purity of the human race, the xenophobes will allow the inter-dimensional aliens enslave and isolate the human race, maintaining its purity. Only the metalized humans can prevent alien domination and enslavement.