Stars, planets and life
And pray that there's intelligent life somewhere up in space, because there's bugger all down here on Earth. -- Monty Python, Galaxy Song (from The Meaning of Life)
Stars: Big stars, small stars, red stars, blue stars
Luminosity classes and populations
Stellar evolution
Planets and moons
Planet types
Moons
Prospects for life on planetary surfaces
The Carbonate Circuit Process
The Life Zone
Biological evolution
Life in non-Earthlike environments?
Alternatives to oxygen?
Alternatives to water?
Inorganic life?
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