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What makes up the Universe?

What makes up the Universe?. Subatomic particles Atoms Planets and planetoids Planetary systems Stars and star systems Nebulas Galaxies Cluster Supercluster. What is a galaxy?. Galaxies are collections of stars with a common gravitational center.

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What makes up the Universe?

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  1. What makes up the Universe?

  2. Subatomic particles • Atoms • Planets and planetoids • Planetary systems • Stars and star systems • Nebulas • Galaxies • Cluster • Supercluster

  3. What is a galaxy? Galaxies are collections of stars with a common gravitational center. Andromeda and the Milky Way by Hubble Space Telescope. www.nasa.gov

  4. There are 4 kinds of galaxies: • Spiral • Barred spiral • Elliptical • Irregular Perseus cluster of galaxies. scienceblogs.com

  5. Spiral galaxy – central bulge of old stars with arms of young stars Colliding spiral galaxies in Arp 274. apod.nasa.gov

  6. Barred spiral galaxy – central rod of old stars with arms of young stars Barred spiral galaxy – central rod of old stars with arms of young stars Hubble observes NGC 1073. www.nasa.gov

  7. Elliptical galaxy – spherical cluster of mostly old stars Elliptical galaxy – spherical cluster of mostly old stars Odd galaxy couple on space voyage. www.nasa.gov

  8. Irregular galaxy – no recognizable shape Irregular galaxy – no recognizable shape Starburst in a dwarf irregular galaxy. apod.nasa.gov

  9. What is a nebula? Nebulas are clouds of gas and dust. They are the birthplace of stars and galaxies. Pillar and jets. www.nasa.gov

  10. There are 4 kinds of nebulas: • Emission • Reflection • Dark • Planetary Hubble’s lagoon. apod.nasa.gov

  11. Emission nebula Emission nebula – produces its own light A beautiful Trifid. apod.nasa.gov

  12. Reflection nebula Reflection nebula – reflects the light of neighboring stars Reflecting Merope. apod.nasa.gov

  13. Dark nebula – blocks the light of stars behind it Hubble observes the popular Horsehead nebula. www.spacetelescope.org

  14. Planetary nebula – clouds of star material exhaled by a dying star Hubble observes glowing, fiery shells of gas. www.nasa.gov

  15. What is a star? • Balls of hot gasses • Produce own light through nuclear fusion Andromeda and the Milky Way by Hubble Space Telescope. www.nasa.gov

  16. There are 7 Star types: • Oh • Boy • A • Failing • Grade • Kills • Me Hot Young Small Blue Cold Old Large Red Perseus cluster of galaxies. scienceblogs.com

  17. www.cmso.info.

  18. What is the Solar System? The Solar System is the star system which has Sol for its center.

  19. Where is our Solar System? The Milky Way. popchassid.com

  20. Parts of the Solar System • Sol • Inner planets • Asteroid belt • Outer planets • Kuiper Belt • Oort Cloud The Solar System. solarsystem.nasa.gov

  21. Solar sytsem. spaceplace.nasa.gov

  22. Inner planets – Rocky planets (Mercury, Venus, Earth, Mars) • Thin atmosphere • Thick, rocky layers • Metallic cores

  23. The Inner Planets. www.astronomy.ie

  24. Outer planets – Gas giants (Jupiter, Saturn, Uranus) • Thick atmosphere • Thin rocky layers • Small metallic cores

  25. The Outer Planets. www.astronomy.ie

  26. The Solar System. www.astronomy.ie

  27. How do planets move? • Axial tilt • Rotation • Revolution

  28. Axial tilt. en.wikipedia.org

  29. Rotating Earth. superiorplatform.com

  30. Revolving planet. oncirculation.com

  31. Solar System in motion. myweb.rollins.edu

  32. What is a planetoid? A planetoid is a rocky body orbiting the Sun. It is smaller than a planet. Planetoids are also known as asteroids.

  33. Asteroid belt – region filled with rocky bodies orbiting the Sun The asteroid belt. www.jpl.nasa.gov

  34. Kuiper belt – outer region of planetoids orbiting the Sun (includes Pluto) The Kuiper Belt. heasarc.nasa.gov

  35. Oort Cloud – outermost group of planetoids forming a “shell” around the Sun The Oort Cloud. spaceplace.nasa.gov

  36. What are comets? Orbit of a comet. www.nasa.gov

  37. Comets. spaceplace.nasa.gov

  38. Comets. neo.ssa.esa.int

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