The infrared photons emitted by the surface are mostly absorbed in the atmosphere by greenhouse gases and clouds and do not escape directly to space. (sciencedaily.com)
One way to measure how an object's brightness changes is to count the number of photons it emits over time. (aasnova.org)
The infrared photons emitted by the surface are mostly absorbed in the atmosphere by greenhouse gases and clouds and do not escape directly to space. (sciencedaily.com)