“These three bright nebulae are often featured in telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way. In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula left of center, and colorful M20 on the right. The third, NGC 6559, is above M8, separated from the larger nebula by a dark dust lane. All three are stellar nurseries about five thousand light-years or so distant.
The expansive M8, over a hundred light-years across, is also known as the Lagoon Nebula. M20's popular moniker is the Trifid. Glowing hydrogen gas creates the dominant red color of the emission nebulae, with contrasting blue hues, most striking in the Trifid, due to dust reflected starlight. The colorful skyscape recorded with telescope and digital camera also includes one of Messier's open star clusters, M21, just above the Trifid.”
○
"The eternal silence of infinite spaces frightens me. Why now rather than then? Who has put me here? By whose order and direction have this place and time have been ascribed to me? We travel in a vast sphere, always drifting in the uncertain, pulled from one side to another. Whenever we find a fixed point to attach and to fasten ourselves, it shifts and leaves us; and if we follow it, it eludes our grasp, slips past us, and vanishes for ever. Nothing stays for us. This is our natural condition, most contrary to our inclination; we burn with desires to find solid ground and an ultimate and solid foundation for building a tower reaching to the Infinite. But always these bases crack, and the earth obstinately opens up into abysses. We are infinitely removed from comprehending the extremes, since the end of things and their beginning are hopelessly hidden from us in an encapsulated secret; we are equally incapable of seeing the Nothing from which we were made, and the Infinite in which we are swallowed up."
- Blaise Pascal
No comments:
Post a Comment