Steve's astrocorner reviews the decadal survey for where astrophysics and astronomy He looks at the Webb Space telescope and a lot more.
Weirdwarp reviews the possibility of a large planet Tyche in the Oort comet cloud
Nextbigfuture had looked at the Tyche planet X theory as well
Nextbigfuture also submitted the article on friction in vacuum and a refinement of the ONeill space colonization plan
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