NASA @NASA
This @NASAHubble image of red and blue stars shows a globular cluster with stars packed 100 to 1,000 times more closely than in our part of space. The data used to create this image is helping astronomers understand how stars evolve and ultimately die out: https://t.co/JF3DbtYhE5 https://t.co/hXBwgPv70a — PolitiTweet.org