NASAのインスタグラム(nasa) - 6月30日 05時57分

Twinkle, twinkle, many stars! ⭐️ Spotted by our @NASAHubble telescope roughly in the direction of the center of the Milky Way, is this gravitationally bound collection of stars, also known as a globular cluster. Globular clusters contain hundreds of thousands of stars that are thought to have formed at roughly the same time.

Studies have shown that the globular cluster seen here is home to an aging population of stars. Most globular clusters orbiting the Milky Way are estimated to be over 10 billion years old; as a result, they contain some of the oldest stars in our galaxy, formed very early in the galaxy’s history. However, their role in galactic evolution is still a matter of study.

Credit: NASA/ESA/Hubble

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