“Perfect” Thermal/Planck/Blackbody Radiation Temperature “Perfect” Spectral Line Radiation Material Composition Q: How can we use Light to detect Motion…?
Stellar Companions… “Binary / (Multiple) Stars”
“Visual Binaries” (not mere “Optical Double Stars”) are very convenient… but what if you can’t separate them?
Q: How to detect dim “Extrasolar Planets” (“Exoplanets”)?
A: Use Newton’s Third Law! (“Action-Reaction”…
i.e., “Force-Counterforce”)
The “Habitable Planets Catalog”:
http://phl.upr.edu/projects/habitable-exoplanets-catalog