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Galaxysort
- 5. • Hubble’s Tuning Fork • Spiral, barred, irregular, elliptical • Light concentration • Types of stars • Color • And more!
- 6. Slide 1 https://en.wikipedia.org/wiki/Hubble_Ultra-Deep_Field Slide 2 http://www.constellation-guide.com/flame-nebula/ https://www.universetoday.com/100073/portrait-of-ngc-5189-new-light-on-an-old-planetary/ https://www.nasa.gov/feature/goddard/2017/messier-51-the-whirlpool-galaxy/ https://astronomynow.com/2016/11/21/hubbles-multispectral-view-of-spiral-galaxy-ngc-3274/ Slide 3 https://en.wikipedia.org/wiki/Galaxy_morphological_classification Slide 4 The Universe at Your Fingertips Slide 5 https://everwideningcircles.com/2015/12/03/place-in-the-universe-buzzfeed-video/
Editor's Notes
- This long exposure looking into one area of the sky from Hubble, shows the vast quantity of galaxies in our Universe. Notice the different shapes, sizes, colors. Galaxies are be at many distances, which is why with a very long exposure even the furthest galaxies show up.
- Our solar system is located in an arm of the Milky Way galaxy. Notice the black hole at the center. Gravity is what causes galaxies to form and stay together, therefore there is more mass in the centers of galaxies. Nearly all the mass in the universe is concentrated in galaxies.
- Some images that look like galaxies are actually nebula, where stars are born or supernova, where stars explode. Researchers need to sort through the sky to determine what they are seeing. Many galaxies have not been categorized or named yet, in fact there are citizen science programs that anyone can participate in to help categorize galaxies.
- These are all galaxies. How are they similar and different? Could our angle of sight make a galaxy look totally different? This is a good time to have your students do the galaxy sort activity to come up with their own creative sorting ideas.
- The ways scientists classify galaxies today. Where they similar to what you came up with? What can we learn from sorting and classifying galaxies?