https://sudonull.com/gravitational-waves-measure-the-hubble-constant
New measurement H_0 = 69.9 km/s/Mpc via GW sirens resolves the Hubble tension. Details of the method, comparison with CMB and SN. For astronomers and cosmologists.
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https://sudonull.com/ngc-6000-galaxy-with-active-core-in-scorpius
Explore the structure of the spiral galaxy NGC 6000: color gradient, black hole in the core, star formation. Hubble images through the dust of the Milky Way. For astronomers and enthusiasts.
From the web
Jul 28, 2026 ·
https://www.britannica.com/science/Hubble-constant
Jul 28, 2026 · Hubble constant , in cosmology, constant of proportionality in the relation between the velocities of remote galaxies and their distances. It expresses the rate at which the universe is expanding. It is denoted by the symbol H_0 and named in honor of American astronomer Edwin Hubble.
Aug 4, 2025 ·
https://science.nasa.gov/mission/hubble/science/science-behind-the-discoveries/hubble-constant-and-tension/
Aug 4, 2025 · Space telescope measurements find a Hubble Constant, or expansion rate for the universe, of around 70-76 kilometers per second per megaparsec (which gives an age for the universe of about 13.8 billion years).
May 17, 2026 ·
https://sentinelmission.org/astronomical-units-measurements-glossary/hubble-constant-h%E2%82%80/
May 17, 2026 · Named after the American astronomer Edwin Hubble, who first discovered the expansion of the universe in the 1920s, the Hubble Constant is a measure of how quickly galaxies are moving away from each other due to the expansion of space .
Jun 30, 2026 ·
https://www.savemyexams.com/igcse/physics/cie/23/revision-notes/6-space-physics/6-2-stars-and-the-universe/6-2-7-age-of-the-universe/
Jun 30, 2026 · Learn about the age of the universe for your IGCSE Physics exam. This revision note includes understanding the Hubble constant , redshift and galaxy distance.
Nov 18, 2022 ·
https://svs.gsfc.nasa.gov/14243
Nov 18, 2022 · When the Hubble Space Telescope launched, one of its main goals was to measure the rate at which our universe is expanding . That rate is called the “Hubble Constant” – named after the astronomer Edwin Hubble, who contributed to the discovery of the universe’s expansion.
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