Tag Info

New answers tagged

12

An astronaut on the moon could only be seen by reflecting the Sun's light towards Earth. Stars on the other hand emit their own light. To first order, the amount of flux incident upon the Moon from the Sun is the same as that at the Earth - about 1.4 kW/m$^{2}$. Let us assume that an astronaut is perfectly reflective and that the relevant reflective area ...



Top 50 recent answers are included