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Cosmology

At Forbes: Could dark energy be a misinterpretation of the data?

Siegel: In the near future, observatories like the ESA’s Euclid, the NSF’s Vera Rubin Observatory, and NASA’s Nancy Roman Observatory will improve that uncertainty so that if dark energy departs from a constant by as little as ~1-2%, we’ll be able to detect it. If it strengthens or weakens over time, or varies in different directions, it would be a revolutionary new indicator that dark energy is even more exotic than we currently think. Read More ›

CERN: New exotic particle, tetraquark, discovered

CERN: The new particle contains two charm quarks and an up and a down antiquark. Several tetraquarks have been discovered in recent years (including one with two charm quarks and two charm antiquarks), but this is the first one that contains two charm quarks, without charm antiquarks to balance them. Read More ›

Jordan Peterson interviews Larry Krauss on scientism

Krauss’s claims — it’s not just possible but “quite likely” that our universe arose from nothing, “no space, no time, and maybe no laws.” At the least, we can say confidently that it has all the properties we would expect to observe in a 14-billion-year-old universe that came into being “spontaneously, without any supernatural shenanigans.” — are clearly ridiculous. “Nothing” is not an account of anything and there is no way we could know what a universe from nothing “should” look like. Peterson is being too kind here. Read More ›

Is “string theory world” in some trouble?

Some of us think string theory only existed in order to give a bizarre twist to the fine-tuning of our universe and to create a basis for believing that there is an uncountable infinity of universes out there instead. Apart from that, it may be hard to see much point. We shall see. Read More ›

Can only math solve the mystery at the heart of the universe?

Hartnett, quoting: "“This is [a] very embarrassing thing that we don’t have a single quantum field theory we can describe in four dimensions, nonperturbatively,” said Rejzner. “It’s a hard problem, and apparently it needs more than one or two generations of mathematicians and physicists to solve it.”" Read More ›

When science becomes religion, science journalists write the scriptures

Asked at Aeon, “Are we part of a dying reality or a blip in eternity? The value of the Hubble Constant could tell us which terror awaits." Bet on them all being wrong. That’s probably the only thing that has happened lots of times before. Read More ›

A unified theory of physics is within reach?

"It didn’t have to be this way. The charges of the elementary particles in our Universe could have been such that there was no way to unify any two or more of them into a single unified particle. It’s the combination of observational data and mathematics that offers us strong hints that the charges for elementary particles in the standard model aren’t arbitrary, but rather arise by virtue of being embedded into a grand unified theory framework." But isn't that an argument for God? Read More ›