Spiral Galaxies Similar to the Milky Way - PowerPoint PPT Presentation

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Spiral Galaxies Similar to the Milky Way

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  1. NATS 1311 - From the Cosmos to Earth Spiral Galaxies Similar to the Milky Way Edge view View from above

  2. NATS 1311 - From the Cosmos to Earth The Milky Way The Sun is located on the Orion spiral arm about 30,000 LY from the galactic center It takes about 230 million years for the sun to complete one orbit around the galactic center

  3. NATS 1311 - From the Cosmos to Earth Other Galaxies in Our Local Group A Ring Galaxy The Andromeda Galaxy 2.3 million LY away

  4. NATS 1311 - From the Cosmos to Earth Deep field view - about 10 billion LY away

  5. NATS 1311 - From the Cosmos to Earth • In our galaxy there are about 200 billion stars • In our universe there are over 100 billion galaxies • There are more stars in the universe than there are grains of sand on the Earth

  6. NATS 1311 - From the Cosmos to Earth If the Universe was one year old (instead of 15 billion years) The Cosmic Calendar (Carl Sagan)

  7. NATS 1311 - From the Cosmos to Earth 1027 meters = 1000 yottameters 100 Billion Light Years This image represents the size of the known universe -- a sphere with a radius of 13.7 billion light years.

  8. NATS 1311 - From the Cosmos to Earth 1026 meters = 100 yottameters Ten Billion Light Years Light from galaxies on the edge would require 5 billion years to reach the center. Observers at the center are seeing light that was emitted by these galaxies before the solar system formed. The largest scale picture ever taken. Each of the 9325 points is a galaxy like ours. They clump together in 'superclusters' around great voids which can be 150 million light years across.

  9. NATS 1311 - From the Cosmos to Earth 1025 meters = 10 yottameters One Billion Light Years Astronomers have determined that the largest structures within the visible universe - superclusters, walls, and sheets - are about 200 million light years on a side.

  10. NATS 1311 - From the Cosmos to Earth 1024 meters = 1 yottameter 100 Million Light Years Clusters of Galaxies

  11. NATS 1311 - From the Cosmos to Earth 1023 meters = 100 zettameters 10 Million Light Years Within the Virgo Cluster

  12. NATS 1311 - From the Cosmos to Earth 1022 meters = 10 zettameters 1 Million Light Years The Local Group - Our galaxy with the Magellanic Clouds - two companion galaxies on the right.

  13. NATS 1311 - From the Cosmos to Earth 1021 meters = 1 zettameter 100,000 Light Years Our galaxy - the Milky Way - looks rather like a whirlpool. It has spiral arms curling outwards from the center and rotates at about 900 kilometres per hour. It contains about 200 billion stars.

  14. NATS 1311 - From the Cosmos to Earth 1020 meters = 100 exameters 10,000 Light Years Our Spiral Arm

  15. NATS 1311 - From the Cosmos to Earth 1019 meters = 10 exameters 1,000 Light Years The Stars of the Orion Arm

  16. NATS 1311 - From the Cosmos to Earth 1018 meters = 1 exameter 100 Light Years Stars within 50 Light Years

  17. NATS 1311 - From the Cosmos to Earth 1017 meters = 100 petameters 10 Light Years The Nearest Stars

  18. NATS 1311 - From the Cosmos to Earth 1016 meters = 10 petameters 1 Light Year The Oort Cloud

  19. NATS 1311 - From the Cosmos to Earth 1015 meters = 1 petameter 0.1 Light Year Sol - our Sun

  20. NATS 1311 - From the Cosmos to Earth 1014 meters = 100 terameters Our Sun and a few rocks

  21. NATS 1311 - From the Cosmos to Earth 1013 meters = 10 terameters The solar system. Only the orbit of Pluto, the furthest planet from the Sun, is off the picture.

  22. NATS 1311 - From the Cosmos to Earth 1012 meters = 1 terameter Within the orbit of Jupiter - the orbits of the inner four planets : Mercury, Venus, Earth and Mars. All four have rocky crusts and metallic cores.

  23. NATS 1311 - From the Cosmos to Earth 1011 meters = 100 gigameters Six weeks of the Earth's orbit. The orbits of Venus and Mars are just visible on either side.

  24. NATS 1311 - From the Cosmos to Earth 1010 meters = 10 gigameters Four days of the Earth's orbit.

  25. NATS 1311 - From the Cosmos to Earth 109 meters = 1 gigameter The moon's orbit around the Earth, the furthest humans have ever traveled.

  26. NATS 1311 - From the Cosmos to Earth 108 meters = 100 megameters Earth

  27. NATS 1311 - From the Cosmos to Earth 107 meters = 10 megameters North and Central America

  28. NATS 1311 - From the Cosmos to Earth 106 meters = 1 megameter California

  29. NATS 1311 - From the Cosmos to Earth 105 meters = 100 kilometer The San Francisco Bay Area

  30. NATS 1311 - From the Cosmos to Earth 104 meters = 10 kilometers San Francisco

  31. NATS 1311 - From the Cosmos to Earth 103 meters = 1 kilometer Golden Gate Park

  32. NATS 1311 - From the Cosmos to Earth 102 meters = 100 meters Japanese Tea Garden - one hectare (10,000 m2)

  33. NATS 1311 - From the Cosmos to Earth 101 meters = 10 meters A pond with lily pads

  34. NATS 1311 - From the Cosmos to Earth 100 meters = 1 meter A one-meter square

  35. NATS 1311 - From the Cosmos to Earth 10-1 meters = 10 centimeters A bee on a lily pad flower

  36. NATS 1311 - From the Cosmos to Earth 10-2 meters = 1 centimeter A bee's head

  37. NATS 1311 - From the Cosmos to Earth 10-3 meters = 1 millimeter A bee's eye

  38. NATS 1311 - From the Cosmos to Earth 10-4 meters = 100 micrometers Pollen

  39. NATS 1311 - From the Cosmos to Earth 10-5 meters = 10 micrometers Bacteria

  40. NATS 1311 - From the Cosmos to Earth 10-6 meters = 1 micrometer Virus on a bacterium

  41. NATS 1311 - From the Cosmos to Earth 10-7 meters = 100 nanometers A virus

  42. NATS 1311 - From the Cosmos to Earth 10-8 meters = 10 nanometers The structure of DNA

  43. NATS 1311 - From the Cosmos to Earth 10-9 meters = 1 nanometer The molecules of DNA

  44. NATS 1311 - From the Cosmos to Earth 10-10 meters = 100 picometers Carbon's outer electron shell

  45. NATS 1311 - From the Cosmos to Earth 10-11 meters = 10 picometers The inner electron cloud

  46. NATS 1311 - From the Cosmos to Earth 10-12 meters = 1 picometer Within the electron cloud

  47. NATS 1311 - From the Cosmos to Earth 10-13 meters = 100 femtometers The nucleus

  48. NATS 1311 - From the Cosmos to Earth 10-14 meters = 10 femtometers The nucleus of carbon

  49. NATS 1311 - From the Cosmos to Earth 10-15 meters = 1 femtometer A proton

  50. NATS 1311 - From the Cosmos to Earth 10-16 meters = 100 attometers Within the proton