Nanoraptor 1 day ago
More - DNA fingerprinting. When I was born, paternity was *blood type* & antigen based. PCR didn't exist. The human genome hadn't been sequenced. nor did CRISPR.
*there were no photos of pluto at all*. Just a dot.
Black holes were theoretical.
Exoplanets were theoretical
This was Mars:
add a skeleton here at some point