#space #nasa
Full Explanation: https://t.co/SP2jFj1AQ7
(Excerpt): Why do some spiral galaxies have a ring around the center? Spiral galaxy NGC 1398 not only has a ring of pearly stars, gas and dust around its center, but a bar of stars and gas across its center, and spiral arm… https://t.co/bTX2C9W8eH
Full Explanation
