
NASA @NASA
Our nearest galactic neighbor has a halo. 😇 With @NASAHubble, scientists mapped a nearly invisible halo of gas around the Andromeda Galaxy, extending halfway to our Milky Way. If human eyes could see it, it would be the biggest feature in the night sky: https://t.co/mgECyva6Wc https://t.co/LefP15mNmd — PolitiTweet.org