NASAのインスタグラム(nasa) - 3月10日 09時53分

Join us as we share our missions & images that appear on the #Cosmos premiere. To tease: the Ring Nebula

This planetary nebula's simple, graceful appearance is thought to be due to perspective: our view from Earth looking straight into what is actually a barrel-shaped cloud of gas shrugged off by a dying central star. Hot blue gas near the energizing central star gives way to progressively cooler green and yellow gas at greater distances with the coolest red gas along the outer boundary.

Credit: NASA/Hubble Heritage Team
#hubble #nasa #space #planetary #nebula #universe

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