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  1. en.wikipedia.org › wiki › Hubble's_lawHubble's law - Wikipedia

    2 giorni fa · Redshift can be measured by determining the wavelength of a known transition, such as hydrogen α-lines for distant quasars, and finding the fractional shift compared to a stationary reference. Thus, redshift is a quantity unambiguous for experimental observation.

  2. 5 giorni fa · Quasars are the supermassive black holes at the centres of early galaxies. Scientists have unlocked their secrets to use them as 'clocks' to measure time near the beginning of the universe.

  3. 1 giorno fa · The mission aims to construct by far the largest and most precise 3D space catalog ever made, totalling approximately 1 billion astronomical objects, mainly stars, but also planets, comets, asteroids and quasars, among others.

  4. 3 giorni fa · Bell's theorem is a term encompassing a number of closely related results in physics, all of which determine that quantum mechanics is incompatible with local hidden-variable theories, given some basic assumptions about the nature of measurement.

  5. 2 giorni fa · At the Cerro Paranal Observatory, a laser beam is used to create an artificial star to tune the Very Large Telescope (VLT). The search for exoplanets on which extraterrestrial civilizations could be found is one of the many missions of the VLT. The Kardashev scale ( Russian: Шкала́ Кардашёва, romanized : Shkalá Kardashova) is a ...

  6. 2 giorni fa · Voce principale: Amici di Maria De Filippi. La ventitreesima edizione del talent show musicale Amici di Maria De Filippi è andata in onda nella sua fase serale dal 23 marzo [1] al 18 maggio 2024 in prima serata su Canale 5 per nove puntate con la conduzione di Maria De Filippi [2].

  7. it.wikipedia.org › wiki › AcquaAcqua - Wikipedia

    4 giorni fa · L' acqua è un composto chimico di formula molecolare H 2 O, in cui i due atomi di idrogeno sono legati all'atomo di ossigeno con legame covalente polare.