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13 ore fa · e. Hubble's law, also known as the Hubble–Lemaître law, [1] is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth.
4 giorni fa · Supermassive black hole (SMBH), a black hole more than one hundred thousand times the mass of the Sun. Nearly every large galaxy has a supermassive black hole at its centre. Active galactic nuclei, such as Seyfert galaxies and quasars, are powered by supermassive black holes.
- The Editors of Encyclopaedia Britannica
1 giorno fa · In gamma-ray astronomy, gamma-ray bursts ( GRBs) are immensely energetic explosions that have been observed in distant galaxies, being the brightest and most extreme explosive events in the entire universe, [1] [2] [3] as NASA describes the bursts as the "most powerful class of explosions in the universe". [4]
3 giorni 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.
- 19 December 2013, 09:12:14 UTC
- 9 years, 9 months and 16 days, (in progress)
- 2,029 kg (4,473 lb)
Quasars are large supermassive black holes at the centre of a galaxy that is so active that it tends to outshine the stars in the galaxy. Quasars tend to have accretion discs of gas and dust; when material from the disc falls into the Quasar, it is ejected as electromagnetic radiation.
2 giorni fa · Regno Unito Inghilterra. L' Arsenal Football Club, noto semplicemente come Arsenal, è una società calcistica inglese con sede nella città di Londra, più precisamente nel quartiere di Highbury ( Islington ). [3] Fondato nel 1886, il club milita dal 1919 in Premier League (massima serie del campionato inglese), risultando quindi essere la ...
2 giorni fa · Modifica dati su Wikidata·Manuale. Mina, pseudonimo di Mina Anna Maria Mazzini [6] ( Busto Arsizio, 25 marzo 1940 ), è una cantante, produttrice discografica, conduttrice televisiva e attrice italiana naturalizzata svizzera. [2] Soprannominata La tigre di Cremona, [7] è considerata una delle più grandi interpreti nella storia della musica ...
