Showing posts with label Stargazing. Show all posts
Showing posts with label Stargazing. Show all posts

Saturday, December 5, 2015

Light and Dark

Light is life. The Sun is one star among a continuous and distinctive band of stars called the main sequence. Carl Sagan reminds us that when we look up at the night sky, each shinning star light is generated by nuclear fusion.

Fusion powers the stars.


Regions of star formation. Carina Nebula, the Eagle Nebula, and IC 2944.
source: ESO

The Sun like other stars, generates energy in its core by fusing hydrogen atoms into helium. The dense core of the Sun fuses 620 million metric tons of hydrogen per second.

The Sun gives us light. As it happens, light is a precious commodity.
...astronomers have been forced to confront the possibility that most of the universe is invisible, and that all the glittering chains of galaxies are no more substantial, no more reliable guides to physical reality, than greasepaint on the face of a clown.
― Dennis Overbye
Atoms are the stuff of stars and of starlight. Yet as chance would have it, atoms constitute a mere 5% of the universe by weight. Some 20% of the universe is made up of mysterious invisible particles called dark matter. An unknown form of energy called dark energy constitutes the remaining 70% of the universe.

Arctic light
Frank Olsen

“let me die
from having been drunk on
indigo skies, my liver...
overflowing with stars.”

― Sanober Khan

REFERENCES

Saturday, August 23, 2014

Asterisks of Eternity

Celestial objects are the asterisks of eternity. Stargazers observe objects like stars, planets, asteroids, comets and novae in the night sky.

In the last half of August, the brilliantly shining planets Venus and Jupiter, and fainter planets Saturn and Mars, streak past each other.

"Venus & Jupiter Conjunction" by Marek Nikodem, 19 August 2014

We are travelers on a cosmic journey, stardust, swirling and dancing in the eddies and whirlpools of infinity. Life is eternal. We have stopped for a moment to encounter each other, to meet, to love, to share. This is a precious moment. It is a little parenthesis in eternity.”
― Paulo Coelho, The Alchemist

"Jupiter & Venus from Earth", by Marek Nikodem, 18 March 2012.

REFERENCES

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