Description
Edwin Hubble's observations of the Andromeda "nebula" in 1924, using the then new 100 inch telescope at Mount Wilson Observatory, lead to the understanding that the Milky Way was not the only galaxy, but one of a countless large groups of stars in our Universe. Within this new field of astronomy, Hubble devised a classification system for galaxies based on their observed shape and structure. In this laboratory exercise, you will use Stellarium to observe a number of galaxies and attempt to classify them using Hubble's system.
For this project piece, use a computer simulation to examine the concept of habitable zones around other stars or examine and classify a range of galaxies. Please read through the assignment background information and follow the steps listed in the lab assignment instructions. You will be asked to form a hypothesis, state the lab objective, record your measurements and calculations, and answer each of the lab questions.
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Module 05 – A Universe of Galaxies
Edwin Hubble’s observations of the Andromeda “nebula” in 1924, using the then new 100 inch telescope
at Mount Wilson Observatory, lead to the understanding that the Milky Way was not the only galaxy, but
one of a countless large groups of stars in our Universe. Within this new field of astronomy, Hubble
devised a classification system for galaxies based on their observed shape and structure. In this
laboratory exercise, you will use Stellarium to observe a number of galaxies and attempt to classify them
using Hubble’s system.
Background Question – Describe the major Hubble galaxy classifications and how they are organized on
Hubble’s “turning fork”.
Elliptical Galaxies - Elliptical galaxies have no spiral structure, found on the left side of the tuning fork.
Lenticulars Galaxies - similar in appearance to an elliptical galaxy, surrounded by an extended, disk-like
structure. Disks in lenticular galaxies lack any spiral like structure and are not creating any stars. The
bulge component is often the dominant s...