"Robert's Quartet" by ESO - http://www.eso.org/public/images/eso0535a/. Licensed under CC BY 3.0 via Wikimedia Commons.
Threshold 2 looks at how the first stars and galaxies formed.
Not studying at Macquarie? Check your school or local library for these titles.
Extension books have more in-depth information, but usually require some background knowledge in the area.
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Here are some helpful subject terms for Threshold 2: