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It seems crazy to say that we have not seen evidence for new physics when the size estimates of dark matter and dark energy account for about 95% of known energ
by snowwrestler 5y ago
It seems crazy to say that we have not seen evidence for new physics when the size estimates of dark matter and dark energy account for about 95% of known energy in the observable universe. How is that not evidence for new physics?
If our physical theories cover only about ~5% of what we observe… that seems like a bit of an issue, no matter how accurately they model that 5%.
- jjk166 5y agoNeither dark matter nor dark energy are new physics. We don't know exactly what particle or combination of particles is responsible for dark matter, but there's not yet evidence that dark matter actually is composed of something outside the standard model. Dark energy is, despite the name, well explained by general relativity. When people talk about new physics, they're referring to things that change our understanding of how the universe works on a fundamental level. By comparison to biology, these are like newly discovered species - of course they're interesting but our understanding of nature is unchallenged.