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The Life of a 1Msun Star
- birth in molecular clouds
- birth and youth: protostar
- adulthood: the main sequence
Death of a 1 Msun star
- Helium flash
- Helium burning
- Death throes
- The end:
- White Dwarf
Sirius system in X-rays
within a globular cluster
- Planetary nebula
Lemon Slice,
NGC 7009
Spirograph,
Helix,
Ring,
Egg,
Hourglass,
Southern Ring
Methuselah,
M76,
owls,
NGC2440,
butterfly
Cat's Eye: optical closeup,
zoom out,
X-ray vision,
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