 |
| Previous Image | Next Image |
| Description: The Universe Cosmology – study of the universe, including its properties, structure, and evolution Universe thought to be Earth-centered for most of human history Immanuel Kant proposed fuzzy patches in the sky were distant galaxies in 1700s Edwin Hubble, 1919 – set out with telescope to solve mystery of Kant’s fuzzy patches Studied Cepheid variables – pulsating variably bright stars Absolute magnitude – true brightness Can only be known by knowing rate at which these stars pulsate Large telescopes can look back in time Big Bang theory – model that most accurately describes birth and current state of the universe. Cataclysmic explosion 13.7 billion years ago Picture Stats: Views: 306 Filesize: 905.69kB Height: 694 Width: 1399 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39661 |