The very earliest expansion, called inflation saw the universe suddenly expand by a factor of at least 10 26 in every direction about 10 −32 of a second after the Big Bang.

Dec 13, 2024 · Then, in 1998, scientists discovered the universe’s rate of expansion is accelerating. In the years since, researchers using the Hubble Space Telescope have observed that the current...

The rate at which the universe is expanding is called the Hubble constant, named after astronomer Edwin Hubble, who, with Milton Humason, showed convincingly that the velocity with which a galaxy …

May 4, 2025 · And yet, for all our advances, the question remains as alive and urgent as ever: how fast is the universe expanding? The answer depends on where you look, how you measure, and what …

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 …

1 day ago · New results strengthen the “Hubble tension,” hinting at the need for rethinking our model of the universe Maunakea, Hawaiʻi – A team of astronomers using a variety of ground and space-based …

Nov 23, 2025 · Expansion operates on scales where speed-of-light limitations cease applying, permitting universe to expand faster than light at cosmic distances. This apparent paradox resolves through …

May 30, 2025 · Scientists have long puzzled over a discrepancy in how fast the universe is expanding, but new, sharper data from the James Webb Space Telescope may finally be solving the mystery.

Mar 8, 2021 · This means that for every megaparsec — 3.3 million light years, or 3 billion trillion kilometers — from Earth, the universe is expanding an extra 73.3 ±2.5 kilometers per second.

May 28, 2025 · Scientists have made a new calculation of the speed at which the universe is expanding, using the data taken by the powerful new James Webb Space Telescope on multiple galaxies.