Tuesday, October 27, 2009

Chemical building blocks for planets and the Arecibo message

Welcome! "Alien Life" tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. Here's today's news:
g Stars - NASA's IBEX spacecraft has made it possible for scientists to construct the first comprehensive sky map of our solar system and its location in the Milky Way. The new view will help researchers study the interaction between our galaxy and sun, and the conditions that allow for habitability in our solar system. See article.
g Abodes - A new study shows how rocky planets are formed from the manic swirl of gas and dust that surround a young star, and determines what chemical building blocks are used to construct the planets. Understanding the dynamics and chemistry that create planetary systems can help astronomers in their search for Earth-like planets in the galaxy. See article.
g Life - Fossils of marine creatures about 270 million years old found at Cessnock have attracted NASA's attention, and could help unlock answers to how life began. See article.
g Message - In 1974, astronomers sent the "Arecibo message," a binary-coded signal that decodes to a graphic illustrating some basic characteristics of Earth. The message was intended more to demonstrate the power of the telescope than to contact distant civilizations. Cornell's 25th anniversary announcement includes a decoded explanation and more information about what the scientists were thinking. See article.
g Cosmicus - NASA’s first flight test of its Ares I-X booster is only slated to last two minutes, but it represents the culmination of years of work by the rocket-minded ATK Space Systems in Utah and almost 1,000 other NASA workers and private contractors across 17 states. See article.
g Aftermath - Book alert: The authentic discovery of extraterrestrial life would usher in a scientific revolution on par with Copernicus or Darwin, writes Paul Davies in “Are We Alone?: Philosophical Implications of the Discovery of Extraterrestrial Life.” Just as these ideas sparked religious and philosophical controversy when they were first offered, so would proof of life arising away from Earth. With this brief book (160 pages, including two appendices and an index), Davies tries to get ahead of the curve and begin to sort out the metaphysical mess before it happens. Many science fiction writers have preceded him, of course, but here the matter is plainly put. This is a very good introduction to a compelling subject. See article.

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