Allen Creative/Steve Allen/Alamy
If visitors to our planet in millions of years found fossils of a Homo sapiens and another great ape in an elaborate tomb, would they be able to prove which one built it?
Abhranil Dasgupta
Kolkata, India
If extraterrestrial visitors have the ability to travel for multiple light years, they must have harnessed tremendous energy to accomplish this feat. This would make them a type II civilisation on the hypothetical Kardashev scale, able to harness the power of their star.
If this is the case, then we should also ponder their mental and physical prowess, such as their sense…
