
NASA @NASA
You know what big galaxies mean? Big galaxy clusters! Two enormous galaxies are captured here by @NASAHubble. These galaxies are some of the thousands that make up the Perseus galaxy cluster, one of the biggest objects known in the universe. Learn more: https://t.co/IdBp2vkus1 https://t.co/wR5DMkDg3j — PolitiTweet.org