Tuesday, August 02, 2005

Not so Greenland


Not so Greenland
Originally uploaded by wybnormal.
I wanted to try out the blog from flickr tool. So I searched for photos tagged glacier to accompany the below story and tried out the new clusters flickr recently added.

Are Earth ice ages created by stars?

Researchers link solar system travel, terrestrial climate

By KEAY DAVIDSON
SAN FRANCISCO CHRONICLE

It might sound preposterous, like astrology, to suggest that galactic events help determine when North America is or isn't buried under immense sheets of ice taller than skyscrapers.

But new research suggests that the coming and going of major ice ages might result partly from our solar system's passage through immense, snakelike clouds of exploding stars in the Milky Way galaxy.

Resembling the curved contrails of a whirling Fourth of July pinwheel, the Milky Way's spiral arms are clouds of stars rich in supernovas, or exploding stars. Supernovas emit showers of charged particles called cosmic rays.

Theorists have proposed that when our solar system passes through a spiral arm, the cosmic rays fall to Earth and knock electrons off atoms in the atmosphere, making them electrically charged, or ionized. Since opposite electrical charges attract each other, the positively charged ionized particles attract the negatively charged portion of water vapor, thus forming large droplets in the form of low-lying clouds.

In turn, the clouds cool the climate and trigger an ice age -- or so theorists suggest. [...]

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2 Comments:

Blogger Pearl Pocock said...

Heretic! I'll be watching this site for any further comedy you may put forward, I expect that next you'll be quoting "theorists" who say that the Sun doesn't revolve around the Earth!

2:12 AM  
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