1 / 18

Groups of Stars

Groups of Stars. Warm Up . Compare the life of a star to the life of a human. Describe how the life stages are similar. You will need to choose the life cycle of either a low-medium mass star OR a high mass star. . Constellations.

norah
Download Presentation

Groups of Stars

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. Groups of Stars

  2. Warm Up • Compare the life of a star to the life of a human. Describe how the life stages are similar. You will need to choose the life cycle of either a low-medium mass star OR a high mass star.

  3. Constellations • Groups of stars that appear to form a pattern as seen from Earth • These stars aren’t necessarily close together, they just happen to lie in the same general direction as viewed from Earth

  4. Star Systems • Many stars exist in groups of two or more stars that are held close together because of gravity • More than half of all stars are members of star systems • Is our Sun part of a star system?

  5. Star clusters Pleiades– all of these stars formed together in the same nebula, they are all about the same age and distance from earth.

  6. Star Cluster • A group of stars that formed from the same nebula • This means they formed at about the same time and they are all about the same distance from Earth

  7. Galaxies

  8. galaxies • Huge groups of individual stars, star systems, star clusters, dust and gas bound together by gravity • Four types of galaxies • Spiral • Barred-Spiral • Elliptical • Irregular

  9. Spiral Galaxies

  10. Barred-spiral galaxies

  11. Elliptical Galaxies

  12. Irregular Galaxies

  13. Milky Way Galaxy – from earth

  14. Milky Way Galaxy facts • Contains 200 – 400 billion stars • Over 100,000 light years across • Average thickness is 10,000 light years, but its 30,000 light years in the center • Every star you can see with the unaided eye is in the Milky Way galaxy • The Sun is in one of the spiral arms about 2/3 of the way (or about 27,000 light years) from the center of the galaxy • The sun orbits once around the Milky Way every 220 million years • At the center of the Milky Way is a bulge of stars surrounded by star clusters • Stars are forming out of dust in the spiral arms • The next closest galaxy is Andromeda, 3 million light years away (THIS GALAXY IS MOVING TOWARDS THE MILKY WAY, THEY WILL EVENTUALLY COLLIDE!!! This event will occur in about 5 billion years…) • What's REALLY at the center of the Milky Way?

More Related