63
" Simply raising the theme of animals in the Third Reich means that our narrative is no longer only an account of what human beings have done to one another, but also about our relations with the natural world. If,viewed against the magnitude and terror of historical events, our personal lives appear almost trivial, the lives of animals may seem more so, and even
to raise the subject can at first seem either insensitive or pedantic. At the
same time, this new dimension places the events in an even vaster perspective still, one in which even the greatest battles and horrendous
crimes can begin to fade into insignificance. This is the standpoint of evolutionary time, in which humankind itself may be no more than a
relatively brief episode. Perhaps the focus on animals may help us to find
a more harmonious balance between the personal, historic, and cosmic
levels, on which, simultaneously we conduct our lives. "
― Boria Sax
77
" 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