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| Description: Expanding universe Hubble’s Law – the recessional speed of galaxies is proportional to their distance Accounts for red shifts Accounts for other galaxies moving away from us Universe was once confined to a “ball” that was Supermassive Dense Hot Matter is moving outward Fate of the universe Two possibilities Universe will last forever Outward expansion will stop and gravitational; contraction will follow Fate of the universe Final fate depends on the average density of the universe If the density is more than the critical density, then the universe would contract Current estimates point to less then the critical density and predict an ever-expanding, or open, universe Picture Stats: Views: 439 Filesize: 753.26kB Height: 500 Width: 1399 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39674 |