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Dark star crashes / Pouring its light into ashes / Reason tatters / The force extends from the axis / Searchlight casting / For faults in the clouds of delusion / Shall we go, you and I, while we can? / Through the transitive nightfall of diamonds -- Robert Hunter & Jerry Garcia.
This is the remnant of an ordinary low-mass star, known as the Ring Nebula.
This high-mass star, ejecting clouds of gas, is near the end of its short life.
The remains of a star whose explosion we saw in 1987 have been analyzed by spreading out the light with with a diffraction grating. The image reveals line emission from oxygen (green), nitrogen & hydrogen (orange), and sulfer (red).
This remnant of a supernova explosion observed in 1054, now called the Crab Nebula, is an expanding cloud of metal-rich gas. In its center is a neutron star spinning 30 times per second.
Wisps of oxygen-rich material (green & blue) from a 3000 year old supernova slam into interstellar gas (red).
Homework 11: Advanced Nuclear Burning, due 11/08. Answer.
Quiz 11: What Are These Stars? -- accompanying HR diagram