The confusion here arises from the fact that proof has several different meanings.
To give a few:
the cogency of evidence that compels acceptance by the mind of a truth or a fact
This is the usage that the OP was thinking needed edited out. In this circumstance "proof" is a mass noun and so should not be pluralized.
the process or an instance of establishing the validity of a statement especially by derivation from other statements in accordance with principles of reasoning
This meaning is use, for example, with respect to mathematical proofs, such as the many proofs of the Pythagorean theorem. This is not a mass noun an so CAN be pluralized.
One of the commenters also mentioned another usage:
a copy (as of typeset text) made for examination or correction
So, an initial impression of a book for confirmation by the editors and author. Again this is not a mass noun and so would not be pluralized: "galley proofs".
So in the case in the OP, for sure the word should be singular.
There are some circumstances when a noun, which is normally mass, can be plural, when the context separates it into parts. "Those little green men over there, and that flying saucer overhead are each proofs of the existence of extra terrestrial life." In this sentence were we to omit the word "each" we would have to go back to the mass, non plural version of "proof". However, because we split it up into separate parts (so that it is no longer an indistinguishable "mass") we do need a plural if more than one.
Had the OP's question been "Are there many concrete-solid proofs of this space odyssey?", then the plural would be correct.