Thursday, December 10, 2009

Poster of the Week

Good Planets are Hard to Find
by Harrell Graham

The universe contains about 100 billion galaxies each with millions – or billions – of stars. Our galaxy, the Milky Way, contains our star, the Sun. Out of all these stars in all these galaxies ours is the only one we know with a planet that supports life.

The Earth and its living systems have evolved for five billion years…and now with our technology we have the power to destroy it all.

We also have the power to save it.

Artwork & Text © 1985
Photo courtesy NASA

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