Sigh. Unequivocal. Really. I believe life exists in places other than earth, but...if it were really unequivocal, wouldn't there be a masthead on a newspaper somewhere that would be about ten inches high?
Granted, no serious person reads newspapers any more, but still...
I’d love to find evidence of life in space. Even microbial life would do but so far there is zero evidence. There have been a few interesting suggestions of by products of life but those could also be produced by non organic chemical means.
Frankly I think the Spirit and Opportunity rovers have shown us our most likely looks at possible past life on mars. I’m a hopeful skeptic but some of the close up photos showed what looked for all the world like tiny marine fossils. However, without going there, collecting them and bringing them back for in depth study, they’re nothing but interesting rocks.
I think the point turns on the distinction between evidence and proof. There is unequivocal evidence for the existence of the Easter Bunny. There is no proof.