LOST... Old concepts to project never going off paper

some things go on to be famous while some things never ever took off the ground... It has come to my knowledge once I found a lot of old magazines from Air and Space and Science all the way back into the early 90s. Some of the articles where interesting and some where mind blowing. But I knew this had to be shared. So I share my remarks on the website post here... But there is still a lot of concepts, tests, and projects that where cancelled, failed, or in some cases died in explosions

Here's one of the dozens (possibly hundreds) of crewed mars mission proposals that can be found on NTRS (link: https://ntrs.nasa.gov/api/citations/19870008312/downloads/19870008312.pdf) This one in particular, a fully propulsive cryogenic mars mission proposal powered by a nuclear reactor, is unique in many ways: - it's an extremely large vehicle, mostly because of the two arms that simulate artificial gravity during the nearly 3 years long mission; - it lands not only on Mars itself