Hubble Space Telescope Lesson Booklet Teacher's ... - Top Stars
Hubble Space Telescope Lesson Booklet Teacher's ... - Top Stars
Hubble Space Telescope Lesson Booklet Teacher's ... - Top Stars
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2<br />
Objectives:<br />
To be introduced to the <strong>Hubble</strong> Tuning Fork Diagram<br />
To be introduced to <strong>Hubble</strong>’s Classification Scheme.<br />
To learn of <strong>Hubble</strong>’s three types of galaxies.<br />
Tuning Fork Diagram<br />
The <strong>Hubble</strong><br />
Tuning Fork Diagram<br />
In the year 1923, Edwin P. <strong>Hubble</strong> discovered that the<br />
Andromeda Nebula was actually a galaxy. Today, the<br />
Andromeda Nebula is referred to as the Andromeda Galaxy.<br />
Over the next few years, <strong>Hubble</strong> discovered many more<br />
galaxies and by the end of the same decade, <strong>Hubble</strong> found so<br />
many galaxies that he started to compare them to one another.<br />
He then developed a method of classifying the galaxies into<br />
three categories: elliptical galaxies, spiral galaxies, and<br />
barred spiral galaxies. This method is called the <strong>Hubble</strong><br />
Tuning Fork Diagram. The diagram is still used by<br />
scien-tists today, but in an updated version.<br />
Karen Freiboth<br />
NASA <strong>Top</strong> <strong>Stars</strong>
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