Tag: Cosmological Principle
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Is cosmology completely broken?
Thirty years ago, when I was taught cosmology as an undergraduate, it felt pretty much like a subject that was close to being fully described: indeed this was the era when Stephen Hawking could announce that we were close to a “theory of everything”. In simplified form the cosmology was this: the universe (and there…
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Copernicus was wrong (maybe)
No, I haven’t taken leave of my senses and decided the Sun moves around the Earth (but here is a pop quiz for all of you laughing at that idea – can you think of a simple experiment that would prove to a 10-year-old that the Earth moves around the Sun?). In fact the issue…
cartesian product ... stuff about computing mostly 