g Stars - Dust samples collected by high-flying aircraft in the upper atmosphere have yielded an unexpectedly rich trove of relicts from the ancient cosmos, report scientists from the Carnegie Institution. The stratospheric dust includes minute grains that likely formed inside stars that lived and died long before the birth of our sun, as well as material from molecular clouds in interstellar space. This "ultra-primitive" material likely wafted into the atmosphere after the Earth passed through the trail of an Earth-crossing comet in 2003, giving scientists a rare opportunity to study cometary dust in the laboratory. See article.
g Message - What would be a sign of alien intelligence? Forget mathematics — try a simple, pure-tone radio signal. See article. Note: This article is from 2003.
g Cosmicus - Some scientists believe that we are on the brink of big changes in planetary exploration. Future robotic explorers might be nothing like what we see today, and the new technologies could have benefits for astrobiologists. See article.
g Aftermath - Astronomers are searching hard for that first interstellar phone-call from ET. But when it happens, how will we react? Will it be a major trauma for humankind, or a new beginning? See article.
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