A dying star’s last hurrah

Ars Technica
By Knowable MagazineJul 17, 2022, 7:00 am291 pts
Enlarge / The Butterfly Nebula, located just under 4,000 light-years from Earth in the constellation Scorpius, is a striking example of a planetary nebula, the end stage in the evolution of a small- to medium-sized star. The butterfly’s diaphanous “wings” consist of gas and dust that have been expelled…

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