Space/Science — HabitableZone

Space/Science » in reply to Interesting.

On Earth, such spheres are normally formed by accretion in some kind of liquid environment.

Here's an article that shows Earth equivalents (note bottle cap in photo below). Unfortunately, a lot of the links there are crapped out.

http://phoenix.lpl.arizona.edu/images/picHematiteUtah.jpg


I also hope Podrock checks in on this.

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