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{ On the Shoulders of Giants Organization of the universe
{
On the Shoulders of Giants
Organization of the universe
THE UNIVERSE: 3 theories1. Open, expands forever2. Closed, like a saddle3. expanding and
contracting
Galaxies: contain stars, huge clouds of gas and dust (nebulae) which revolve around a nucleus.Three types
Spiral galaxies: Very organized like our Milky Way galaxy
Elliptical Galaxies: Sphere or flattened disk, older stars, little gas and dust
Irregular galaxies: No specific shape
Stars: Made up of mostly Hydrogen and Helium. Formed by collapsing gas and dust
Nebulae: Birthplace of stars, globs of gas and dust. Full of radio, UV, IR, and X-Rays
Star Clusters: Open (Pleiades) and Globular(Hercules)
Single star: Our sun. Single star systems are relatively uncommon.
Binary Star systems: Double Stars. Very common type of star system.
Novas: nuclear explosion of a white dwarf star. Causes increased brightness of a star.
![“We [the Moderns] are like dwarves perched on the shoulders of giants [the Ancients], · “We [the Moderns] are like dwarves perched on the shoulders of giants [the Ancients],](https://static.documents.pub/doc/80x56/5f08d0927e708231d423da24/aoewe-the-moderns-are-like-dwarves-perched-on-the-shoulders-of-giants-the-ancients.jpg)
![Standing on the Shoulders of Giants - zenspider.com · Standing on the Shoulders of Giants MWRC 2015, SLC, UT Ryan Davis, Seattle.rb @the_zenspiderx "we [the Moderns] are like dwarves](https://static.documents.pub/doc/80x56/5ecdc6be23e7e560b14fb3fc/standing-on-the-shoulders-of-giants-standing-on-the-shoulders-of-giants-mwrc-2015.jpg)
