EDRO

Seeding Socioeconomic Avalanches! [Hacked by WordPress; filtered by Google!]

Nature and You

Posted by edro on June 15, 2008

A Place in the Cosmos

The time has come for humanity, you, to consider a fundamental issue about your place within the cosmos. Can you answer the following questions?

  • How important is your role to the cosmos?
  • Do you have a role to play?
  • Can nature do without you?
  • How do you make your role indispensable?

Violent death of an old sun-like star!


Dusty Eye of the Helix Nebula [NGC 7293] Credit: NASA/JPL-Caltech/K. Su (Univ. of Ariz.)

An infrared image of the Helix nebula, a cosmic starlet known for its vivid colors and eerie resemblance to a giant eye. The nebula, located about 700 light-years away in the constellation Aquarius, belongs to a class of objects called planetary nebulae—the carcasses of deceased sun-like stars.

When sun-like stars die, they blow out their outer gaseous layers. The layers are heated by the hot core of the dead star, called a white dwarf, and shine with infrared and visible colors. (Source: Spitzer Space Telescope )

NEW Stars Are Born!


N90 is one of the star-forming regions in the Small Magellanic Cloud. The rich populations of infant stars found here are formed in an environment that is very different from the Milky Way Galaxy. Image taken buy the Hubble Space Telescope. (ESA/NASA)

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