Why can't my headlights shine more than 160 feet in front of me, but stars can emit light that travels allllll the way the fuck to us here on the earth... I understand that on earth, there is atmosphere and whatnot that scatters and stops the light from shining further, but isnt starlight travelling through arguably much more atmosphere to shine all the way the fuck to my eyes? I mean- what the fuck- Why do people believe this shit? Can someone explain to me why I can see starlight from billions of miles away?
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Your question is easily answered by many of the other posts in this thread but here is a question.
Given the inverse square law, how bright must it be at the surface of the moon given it is pretty bright from here on Earth?