Space | Week 9 | Galaxies

galaxyPoem: Dinosaur Diets – Jane Yolen

Constellation: Bootes

Craft: Galaxy in a Jar

Space Person: Joscelyn Bell (Wikipedia, PBS: A Science Odyssey) Discovered the first radio pulsars

Movie: Hitchhiker’s Guide to the Galaxy


  • galaxy: a collection of star systems
  • milky way galaxy: the name of our galaxy, a spiral galaxy that contains about 400 billion stars
  • elliptical galaxy: a galaxy shaped like a round or flattened ball, generally containing only old stars
  • irregular galaxy: a galaxy that does not have a regular shape
  • spiral galaxy: a galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
  • nuclear bulge: the spherical cloud of stars that lies at the center of spiral galaxies
  • halo: spherical region that surrounds the nuclear bulge and disk
  • galaxy disk: Disk galaxies are galaxies which have disks, a flattened circular volume of stars

References: Galaxy Types, Kid Astronomy : Galaxy, Explore the Milky Way Galaxy DocumentaryMilky Way Song, Milky Way GalaxyGalaxies Part 1, Galaxies Part 2


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