“Perfect” Thermal/Planck/Blackbody Radiation …€œPerfect” Thermal/Planck/Blackbody Radiation Temperature “Perfect” Spectral Line Radiation Material Composition Q: How

“Perfect” Thermal/Planck/Blackbody Radiation Temperature “Perfect” Spectral Line Radiation Material Composition Q: How can we use Light to detect Motion…?

“Doppler Shifts”…for Sound

“Doppler Shifts”…for Light

Stellar Companions… “Binary / (Multiple) Stars”

“Visual Binaries” (not mere “Optical Double Stars”) are very convenient… but what if you can’t separate them?

A “Spectroscopic Binary” Star System

Detecting Planets in Other Solar Systems…

“Direct Imaging”…? (Possible but Very Difficult!)

Q: How to detect dim “Extrasolar Planets” (“Exoplanets”)?

A: Use Newton’s Third Law! (“Action-Reaction”…

i.e., “Force-Counterforce”)

Other Exoplanet Detection Methods (e.g., the Transit Method)

The Extrasolar Planets Encyclopedia: http://exoplanet.eu/

The “Habitable Planets Catalog”:

http://phl.upr.edu/projects/habitable-exoplanets-catalog

Detecting the “Molecules of Life” in Exoplanet Atmospheres…!