Brent Sigman

“Cutting PBS support (0.012% of budget) to help balance the Federal budget is like deleting text files to make room on your 500Gig hard drive”
― Neil deGrasse Tyson

“So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?”
― Neil deGrasse Tyson, Death by Black Hole: And Other Cosmic Quandaries

“I try to deny myself any illusions or delusions, and I think that this perhaps entitles me to try and deny the same to others, at least as long as they refuse to keep their fantasies to themselves.”
― Christopher Hitchens, Hitch 22: A Memoir

“Let's grant that the stars are scattered through space, hither and yon. But how hither, and how yon? To the unaided eye the brightest stars are more than a hundred times brighter than the dimmest. So the dim ones are obviously a hundred times farther away from Earth, aren't they?

Nope.

That simple argument boldly assumes that all stars are intrinsically equally luminous, automatically making the near ones brighter than the far ones. Stars, however, come in a staggering range of luminosities, spanning ten orders of magnitude ten powers of ten. So the brightest stars are not necessarily the ones closest to Earth. In fact, most of the stars you see in the night sky are of the highly luminous variety, and they lie extraordinarily far away.

If most of the stars we see are highly luminous, then surely those stars are common throughout the galaxy.
Nope again.

High-luminosity stars are the rarest. In any given volume of space, they're outnumbered by the low-luminosity stars a thousand to one. It's the prodigious energy output of high-luminosity stars that enables you to see them across such large volumes of space.”
― Neil deGrasse Tyson, Death by Black Hole: And Other Cosmic Quandaries