That black, maddening firmament; that vast cosmic ocean, endlessly deep in every direction, both Heaven and Pandemonium at once; mystical Zodiac, speckled flesh of Tiamat; all that is chaos, infinite and eternal. And yet, it's somehow the bringing to order of this chaos which perhaps has always disturbed me most. The constellations, in their way, almost bring into sharper focus the immensity and insanity of it all - monsters and giants brought to life in all their gigantic monstrosity; Orion and Hercules striding across the sky, limbs reaching for lightyears, only to be dwarfed by the likes of Draco, Pegasus, or Ursa Major. Then bigger still - Cetus, Eridanus, Ophiuchus, and Hydra, spanning nearly the whole of a hemisphere, sunk below the equator in that weird underworld of obscure southern formations. You try to take them in - the neck cranes, the eyes roll, and the mind boggles until this debilitating sense of inverted vertigo overcomes you...
If you can be heartless as the first man who visited the space, then there will be nothing impossibe for you to achieve.