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A quick Primer for Astronomical Distances

This primer provides an overview of astronomical distances and the formation of star clusters, galaxies, and black holes. It discusses the differences between single stars, binary systems, and clusters like open and globular clusters, with examples such as M13 in Hercules and the Pleiades in Taurus. The guide also explores our Milky Way galaxy and its central black hole, Sgr A*, while highlighting other notable galaxies like M31, M81, and M82. For those fascinated by the cosmos, this content is invaluable for understanding our universe's structure.

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A quick Primer for Astronomical Distances

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  1. A quick Primer for Astronomical Distances • http://www.telescope.org/nuffield_21_sci/astrounits.htm • http://janus.astro.umd.edu/astro/distance/ • http://heasarc.nasa.gov/docs/cosmic/earth.html

  2. Star Clusters, Galaxies, & Black Holes Life and Death in a Community of Stars

  3. Stars do not occur in space at completely arbitrary places. Some, such as the Sun, are single (field star), but others are members of pairs or form multiple-star systems. Still others form clusters of various types, and size. All of them are condensed from clouds of gas and dust.

  4. Star Clusters Open Cluster Globular Cluster Contain old stars Tight mass due to stars being drawn by each others’ gravity. Example: M13 in Hercules Contain young stars Often with nebulous gases Example: Pleiades in Taurus

  5. M45 – The Pleiades

  6. M13 – the Hercules Cluster

  7. The Milky Way – inside view

  8. Milky Way – Outside View

  9. Where we are…

  10. Milky Way Q & A http://www.universetoday.com/21563/milky-way/

  11. Sgr A – our very own Black Hole!

  12. Other Galaxies to look for: M31

  13. Other Galaxies to look for: M81 & M82

  14. For more info… http://www.enchantedlearning.com/subjects/astronomy/stars/constellations.shtml

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