Nine Different Earths in One System--How to Make That Possible

Astronomers place planet Earth under what they call a "Goldilocks Zone"--a spot in the solar system where conditions are ideal for liquid water to form, thus making the creation of life possible.

In Norse mythology, there are nine separate worlds--Midgard, Asgard, Vanaheimr, Jotunheimr, Alfheimr, Hel, Nidavellir, Niflheim and Museplheim--all of which are inhabited by creatures of one form or another.

If all this were to be realistically put on a linear plane like our solar system, what kinds of astronomical conditions are required for all nine of them to be placed in a Goldilocks Zone?

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Nine Different Earths in One System--How to Make That Possible

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