this post was submitted on 16 Mar 2024

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James Webb telescope confirms there is something seriously wrong with our understanding of the universe (www.livescience.com)

submitted 7 months ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 7 months ago

We're just inside a cosmic space octopus, pretending we understand... With limbs of the CSP expanding as it moves through timespace.

And we, the cells inside a cell inside the octopus, like to believe ourselves enlightened.

I love space because it humbles even the most confident and intelligent members of our apish species.

[–] [email protected] 4 points 7 months ago

Yay!

[–] [email protected] 4 points 7 months ago (1 children)

From my limited understanding, the discrepancy comes from the two ways to measure the universe's expansion: calculation from cosmic microwave background and calculating a cepheid variable, which uses pulsating stars (pulsars?)

Isn't it more likely that one, or both, ways of measuring are wrong? As in, they're not useful for measuring the universe's rate of expansion?

[–] [email protected] 1 points 7 months ago (2 children)

Isn’t it more likely that one, or both, ways of measuring are wrong? As in, they’re not useful for measuring the universe’s rate of expansion?

Now, scientists using the James Webb and Hubble space telescopes have confirmed that the observation is not down to a measurement error.

I'm trying to understand the distinction you are making. Could you elaborate?

[–] [email protected] 7 points 7 months ago* (last edited 7 months ago) (1 children)

I think the distinction is between arguing that there's a discrepancy because the measurement is bad, or because the measurement doesn't measure what we think it measures.

Is the theory right and we have a measurement error, or is the theory flat out wrong?

[–] [email protected] 1 points 7 months ago

The model is wrong. Get hype

[–] [email protected] 8 points 7 months ago (1 children)

Not a scientist but the article seems to mean that they checked that the tools themselves had no defects giving incorrect measurements.

This comment seems to be questioning the methodology of how we measure the rate of expansion so tackles a different aspect of the conversation.

But that's about as much as I can contribute haha

[–] [email protected] 3 points 7 months ago

Pretty much this. In a (hopefully) more direct metaphor, are we sure we're using a ruler to calculate the length of a line, and not using a ruler to calculate the temperature of a paper?

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