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  1. en.wikipedia.org › wiki › Expansion_of_the_universeExpansion of the universe - Wikipedia

    The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. [1] . It is an intrinsic expansion, so it does not mean that the universe expands "into" anything or that space exists "outside" it.

  2. www.space.com › 52-the-expanding-universe-from-theOur expanding universe: Age, history & other facts | Space

    15 de mar. de 2022 · Our expanding universe: Age, history & other facts. The universe was born with the Big Bang as an unimaginably hot, dense point. When the universe was just 10 -34 of a second or so old — that...

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  4. www.britannica.com › science › expanding-universeExpanding universe | Description & Facts | Britannica

    14 de mar. de 2024 · Expanding universe, dynamic state of the extragalactic realm, the discovery of which transformed 20th-century cosmology. The development of general relativity and its application to cosmology, along with the detection of extragalactic redshift, led to the realization in the 1920s that all galaxies are receding.

    • The Editors of Encyclopaedia Britannica

  5. hubblesite.org › contents › news-releasesNASA's Webb, Hubble Telescopes Affirm Universe's Expansion ...

    11 de mar. de 2024 · As a crosscheck, an initial Webb observation in 2023 confirmed that Hubble measurements of the expanding universe were accurate. However, hoping to relieve the Hubble Tension, some scientists speculated that unseen errors in the measurement may grow and become visible as we look deeper into the universe.

  6. science.nasa.gov › universe › the-universe-isWhat is Dark Energy? Inside our accelerating, expanding Universe

    5 de feb. de 2024 · The short answer is: We don't know. But we do know that it exists, it’s making the universe expand at an accelerating rate, and approximately 68.3 to 70% of the universe is dark energy. The history of the universe is outlined in this infographic. NASA.

  7. www.esa.int › Science_Exploration › Space_ScienceESA - Webb & Hubble confirm Universe’s expansion rate

    11 de mar. de 2024 · Adam holds a Nobel Prize for co-discovering the fact that the Universe’s expansion is accelerating, owing to a mysterious phenomenon now called ‘dark energy’. As a crosscheck, an initial Webb observation in 2023 confirmed that Hubble’s measurements of the expanding Universe were accurate.

  8. news.berkeley.edu › 2021/03/08 › how-fast-is-theHow fast is the universe expanding? Galaxies provide one ...

    8 de mar. de 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. The average from the three other techniques is 73.5 ±1.4 km/sec/Mpc.