GatherNoMoss wrote:
Rings obviously can form naturally. Appears to be stable.

An artificial ring would cast a shadow upon the Earth.

A problem would be that the ring would cast a shadow on the hemisphere that
is already in its winter cycle. This would creat an even greater temperature
differential between hemispheres that may creat some funky weather consequences.

It could be fine tuned...even eliminated should it have unintended consequences.

The ring could consist of high reflective aluminum chaff.


Or the rings could be composed of crystals that refract thermal
radiation in the hemisphere experiencing winter. Assuming you
got the material up there in a equatorial orbit dispersed into
a ring system... how you you get rid of it once you had realized
you screwed up?