
Extrasolar Planets
Dying planet
https://www.sciencedaily.com/releases/2022/12/221219094937.htm
Database of Extrasolar Planets:
Methods for finding exoplanets:
https://www.planetary.org/worlds/exoplanets
This helps determine the fraction of stars having planets and the number of planets per star for the Drake Equation.
Using spectra to determine composition and chemistry of atmosphere:
https://www.pnas.org/doi/10.1073/pnas.1304208111
This relates to fraction of worlds having life from the Drake Equation.