1 / 16

Star Groups 30.3

Star Groups 30.3. Constellations . Groups of stars that form a pattern in the sky 88 recognized by astronomers to divide the sky into sectors Appear to shift to the west a little each night due to revolution of earth so each season has a different set of constellations. Leo and Orion.

carrington
Download Presentation

Star Groups 30.3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Star Groups 30.3

  2. Constellations • Groups of stars that form a pattern in the sky • 88 recognized by astronomers to divide the sky into sectors • Appear to shift to the west a little each night due to revolution of earth so each season has a different set of constellations

  3. Leo and Orion

  4. …it’s not actually a constellation….

  5. …it’s an asterism.

  6. Galaxies • Large groups of stars bound by gravitational attraction • May be a trillion galaxies! • Avg. 100 LY wide with 100 billion stars per galaxy

  7. Types of Galaxies Spiral Irregular Elliptical

  8. Hubble Galaxy Classification

  9. Our Galaxy - The Milky Way • Cloudlike band across the sky • Spiral Galaxy- we are in one of the arms The sun takes 200 million years to revolve around the center

  10. Star Clusters Globular Cluster - M80 • Galaxies also contain groups of stars • They can be open clusters or globular clusters

  11. Binary Stars • Most stars in the galaxy are binary or multiple star systems • They revolve around each other

More Related