of course not. But the sun is somewhat special in the fact that it is a lone star, most stars exist as part of binary or tertiary systems and other multi star clusters.
The Sun is a renewable resource because not matter what we do with the rays that hit the Earth, they will continue to come for billions of years.What?BY definition, the sun has limited mass which is...
Yes, you can get a tan when the sun is low in the sky. But it will take longer because the most effective tanning rays are those from the upper end of the spectrum, and the atmosphere scatters them...