To understand how we classify and differentiate the stars we see in the sky, we first need to understand how they are born and change throughout their lives. Star formation begins with a massive cloud ...

This quiz will take you on a journey through the life cycle of stars, their classification, and the incredible processes that power them. When you purchase through links on our site, we may earn an ...

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From 19th-century glass plates to today’s high-resolution spectrographs, astronomers have developed ingenious ways to measure a star’s temperature, brightness, and chemical makeup. These measurements ...