Josh and natalie ppt


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What we know about other solar systems

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Josh and natalie ppt

  1. 1. By Josh and Natalie
  2. 2. How do we study othersolar systems? For years scientists have studied our own solar system The first extra solar planets were discovered in 1995 Using infrared space telescopes make planets clear to see Planets around other stars are hard to find Astronomers map out solar systems
  3. 3. What do we know about other solarsystems? The sun is only one of 200 billion stars It was the 1990s when astronomers found strong evidence of planets around other stars Stars have a lot to do with solar systems Astronomers have so far found over 500 solar systems, they
  4. 4. What types of planets are we ableto locate?Planets Terrestrial  Also known as “rocky planets”  Composed primarily of metal, rock, and have very high density  Have slow periods of rotation  Tend to be small  Very few satellites or moons Gas Giants  Only extra-solar planets that scientists have been able to discover as of yet  Low density-composed almost completely of gas  Life may be able to exist on some of these!  Huge  In the middle, these planets have a “rocky
  5. 5. More planets that weare able to locate: Planetoids  Group of objects too small to be planets and too large to be asteroids  Thousands of these objects are orbiting the edge of our solar
  6. 6. Tools that we use forinvestigating: They use Infrared Space Telescopeswhich make planets clearer and easier to view.
  7. 7. Hot Jupiters Hot jupiters are Jupiter-sized exoplanets Hot jupiters are Jupiter-sized exoplanets that orbit very close to their star. Sometimes they orbit their star the wrong direction One method that is used to find them is called the “wobble method.” Basically, astronomers use the wobble motion induced on a star by it’s planet’s gravity to detect the presence of the huge planet. If the star is really wobbly, the closer and larger the planet is. There are also “warm jupiters” which orbit farther away from their stars
  8. 8. That’s The Winner (video)
  9. 9. Bibliography "A map of all the water in the solar system." io9. We come from the future.. N.p., n.d. Web. 20 Apr. 2012. < water-in-the-solar-system>. "Scale of Universe - Interactive Scale of the Universe Tool." Scale of Universe - Interactive Scale of the Universe Tool. N.p., n.d. Web. 20 Apr. 2012. "Solar Systems." Space Place - NASA. N.p., n.d. Web. 12 Apr. 1920. < space/solar-systems-in-galaxy.html>.