<https://zh-tw.coursera.org/lecture/life-on-other-planets/physics-overview-oDTOH#lecture>
<http://schema.org/description>
"Watch this video about Physics Overview for Physics Overview in 假如其他星球也有生命. This lecture uses energy balance to determine the effective temperature of planets. The lecture introduces the idea of temperature, black body spectrum and luminosity. We then calculate the location of the habitable zone, the range of distances where planets are likely to have liquid water."
<https://zh-tw.coursera.org/lecture/life-on-other-planets/physics-overview-oDTOH?authMode=signup>