NASAさんのインスタグラム写真 - (NASAInstagram)「This cluster makes the whole place shimmer. ✨ Located 300,000 light years away, NGC 2419 is known as a globular cluster, which is a spherical group of stars that orbit the center of a galaxy. These stars all formed at around the same time meaning they share similar properties. Because of this, it was believed that these stars would also contain similar amounts of helium, however, this observation from @NASAHubble proves that’s not always the case. This cluster has two groups of stars, some that are incredible helium rich, and others that are not. Image Description: On a black backdrop, a large cluster of stars that look like glitter form together in a spherical shape at the center of the image. Some of the stars scatter outside the shape as well, they’re just much fainter than the stars that have clumped together in the middle. Two bright stars shine on the outside of the circle, one at the top right and the other at bottom center. #Space #NASA #Hubble #Galaxy #Stars」4月15日 3時10分