The Earth might not have always been a sphere! Scientists think planet may have originally resembled a Smartie
Most planets that we can observe are spheres, or at least are very close ... There are currently two leading theories for how ...
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'Dismantling an entire planet': Understanding Dyson Spheres and its impact on advanced alien civilisations in space
Type I civilizations harness all the energy available on their planet, approximately 1,016 watts per second. Type III civilizations utilize energy on a galactic scale, including Dyson spheres ...