NASA @NASA
Unveiling the secrets of the Swan Nebula 🦢 This new image from @sofiatelescope is helping scientists chronicle the evolution of this awe-inspiring nebula, which only came to resemble the shape of a swan’s neck relatively recently. https://t.co/1eaD3VrVZN https://t.co/q4iPmf3tq4 — PolitiTweet.org