<p>^ That “basic book” contains references to aliens… here’s a nice excerpt:</p>
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<p>While I do consider interplanetary seeding - early extremophiles or a mixture of elements necessary to microbial life blown off from the surface of a nearby “evolved” planet due to heavy impacts and traveling to early Earth - as a possible beginning of early life, I don’t think there were any complex “aliens” doing the work.</p>
<p>Cloaked ships and teleportation. Seriously.</p>
<p>EDIT: There’s even a description! Now we know what to look out for!</p>