You people can be as far fetched as you want, but it's apparent that common sense has eluded you all.
For starters, evolution is a theory, environmental adaptation is fact.
Regarding Nordic Rh, blood is basically just a fluid which carries oxygen, something which carbon based beings require. Depending on the environment
we live in, our bodies will adapt to an extent over time, but regardless, if we or "they" (the aliens) were going to evolve, we'd do so on a
chomosome level. Human history doesn't show changes in chomosomes or DNA sequences other than basic environmental differences...not people from
other planets coming here and staking claim.
If the solar system was "so different" when the supposed "nordic aliens" came to earth, then there's no chance they could have survived the harsh
state of environment that the earth was in. (As the Earth shows us when we dig stuff up and check it out). If they came from a 'planet' in the
Asteroid belt of our solar system, then they would be a much weaker lifeform because they lack the energy of the sun we have here at our present
orbit. Common knowledge proves this. If you put a weak human in a hostile environment, and expect them to flourish, you've made a losing bet.
We can dig deep enough into the earth to see exactly what earth was like throughout most of it's history. There are great changes, but none that
would point to a different orbit that would allow for a smooth transition (adaptation, evolution, or whatever you want to call it) for newcomers.
Last but not least...to dispell any myths about aliens visiting earth...with emphasis on the supposed Roswell Incident. If there were Aliens with
such advanced technology that they could fly from hundreds of millions of miles away to visit earth, then I seriously doubt that they'd crash no
where else but New Mexico, and even more of a farce....be overrun and contained by the US Military. Anyone who still thinks that Aliens are in US
custody completely lack common sense.

