20 years ago, there were 9 planets in the Solar System. Since then, we unfortunately downgraded one, but added a host more. We only were just discovering our first exoplanets.
20 years ago, microbiologists were discovering the true extent of Extemeophile Bacteria, in thermal vents, at great barometric pressures, in vacuum environments, stored in deep glacial ice for centuries and true Archaea were only just really being looked at and discovered.
20 years is not a lot of time. 20 years is time for humanity to wake up to reality and throw off shackles of prejudices and beliefs. A lot changes.
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