The Hubble parameter changes as a function of the age of the universe

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that the Hubble parameter changes as a function of the age of the universe?

Yes. Observational cosmology and cosmic chronometer studies confirm that the Hubble parameter varies as a function of redshift, which directly corresponds to the age and expansion history of the universe.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked 4 Aug 2026

The analysis

The retrieved papers consistently treat the Hubble parameter as a function of redshift H(z), which maps directly to look-back time and the age of the universe. Multiple studies (such as [0], [1], and [2]) explicitly measure and analyze how H changes over cosmic time. There are no papers refuting this well-established cosmological principle.

Evidence for · 3

Improved constraints on the expansion rate of the Universe up to z ∼ 1.1 from the spectroscopic evolution of cosmic chronometers

2012

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Moresco, M., Cimatti, A., Jimenez, R., Pozzetti, L., Zamorani, G., Bolzonella, M., Dunlop, J., Lamareille, F., Mignoli, M., Pearce, H., Rosati, P., Stern, D., Verde, L., Zucca, E., Carollo, C., Contini, T., Kneib, J., Fèvre, O., Lilly, S., Mainieri, V., Renzini, A., Scodeggio, M., Balestra, I., Gobat, R., McLure, R., Bardelli, S., Bongiorno, A., Caputi, K., Cucciati, O., Torre, S. D., Ravel, L., Franzetti, P., Garilli, B., Iovino, A., Kampczyk, P., Knobel, C., Kovač, K., Borgne, J. L., Brun, V., Maier, C., Pell'o, R., Peng, Y., Pérez-Montero, E., Presotto, V., Silverman, J., Tanaka, M., Tasca, L., Tresse, L., Vergani, D., Almaini, O., Barnes, L., Bordoloi, R., Bradshaw, E., Cappi, A., Chuter, R., Cirasuolo, M., Coppa, G., Diener, C., Foucaud, S., Hartley, W., Kamionkowski, M., Koekemoer, A., López-Sanjuan, C., McCracken, H., Nair, P., Oesch, P., Stanford, A., & Welikala, N. (2012). Improved constraints on the expansion rate of the Universe up to z ∼ 1.1 from the spectroscopic evolution of cosmic chronometers. doi.org. https://doi.org/10.1088/1475-7516/2012/08/006

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More for · 2

Setting the Stage for Cosmic Chronometers. I. Assessing the Impact of Young Stellar Populations on Hubble Parameter Measurements

2018

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Moresco, M., Jimenez, R., Verde, L., Pozzetti, L., Cimatti, A., & Citro, A. (2018). Setting the Stage for Cosmic Chronometers. I. Assessing the Impact of Young Stellar Populations on Hubble Parameter Measurements. doi.org. https://doi.org/10.3847/1538-4357/aae829

Constraining the expansion rate of the Universe using low-redshift ellipticals as cosmic chronometers

2010

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Moresco, M., Jimenez, R., Cimatti, A., & Pozzetti, L. (2010). Constraining the expansion rate of the Universe using low-redshift ellipticals as cosmic chronometers. doi.org. https://doi.org/10.1088/1475-7516/2011/03/045

Related receipts

Is it true that human perception of subjective time duration changes as a function of age? SUPPORTED related question, same topic

What does the evidence say?

Receipt History

first checked04 Aug 2026

judged → SUPPORTED · 9404 Aug 2026

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