Sunday, February 19, 2006

Planetary nebula, Saturn storm and electrosensory powers

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 - Six hundred and fifty light-years away in the constellation Aquarius, a dead star about the size of Earth, is refusing to fade away peacefully. In death, it is spewing out massive amounts of hot gas and intense ultraviolet radiation, creating a spectacular object called a "planetary nebula." See article.
g Abodes - Scientists are tracking the strongest lighting storm ever detected at Saturn. The storm is larger than the continental United States, with electrical activity 1,000 times stronger than the lightning on Earth. See article. For related story, see “An Infrared Movie of Titan”.
g Life - Sharks are known for their almost uncanny ability to detect electrical signals while hunting and navigating. Now researchers have traced the origin of those electrosensory powers to the same type of embryonic cells that gives rise to many head and facial features in humans. See article.
g Intelligence - We might not be able to resist a pretty face after all, according to a report from the University of Pennsylvania. Experiments in which subjects were given a fraction of a second to judge "attractiveness" offered further evidence that our preference for beauty might be hard-wired. People who participated in the studies were also more likely to associate pretty faces with positive traits. See article.
g Message - In late 1997, after almost 40 years of operation, the Ohio State University Radio Observatory and its "Big Ear" radio telescope — which picked up the famous “Wow!” signal — ceased operation. The land on which the observatory was sitting (owned by the Ohio Wesleyan University, Delaware, Ohio) was sold in 1983 to land developers who later claimed their rights to develop the property. The telescope was destroyed in early 1998. See the Web page memorial to Big Ear.
g Cosmicus - NASA aims to sideline shuttle Atlantis in 2008, but a senior agency official said Friday that no job cuts are expected at Kennedy Space Center as a result. See article. For related stories, see “NASA studies shuttle engine seals, contamination” and “Discovery Astronauts Check Shuttle for Return to Flight Mission”.
g Learning - Here are some neat tips for getting started in stargazing; they are intended primarily for unaided vision sky observation and the use of binoculars.
g Imagining - Many problems faced the development of Astrobiology as a credible science when it was first named in 1958. The most basic of these problems was skepticism on the part of many scientists of the time. The ideas of Astrobiology touched too closely with science fiction to be considered seriously. The idea of life on Mars was definitely science fiction: H. G. Wells' "War of the Worlds" and Ray Bradbury's "The Martian Chronicles" attested to that. And Gregory Benford and David Brin in “Heart of the Comet” have since addressed the idea of life being seeded on Earth by comets. Why would anyone take these ideas seriously? See article.
g Aftermath - Reactions to the announcement that scientists had found evidence for primitive life in a meteorite from Mars have been intense. Some concerned the scientific evidence, some the implications of extraterrestrial life, especially if intelligent. Underlying these reactions are assumptions, or beliefs, which often have a religious grounding. The two divergent beliefs, for and against the plurality of life in the universe, are examined historically and through religious traditions, particularly the Judeo-Christian. This examination guides the formulation of the right relation between science and religion as one that respects the autonomy of each discipline, yet allows for each to be open to the discoveries of the other. Based on this relationship, perspectives from scientific exploration are developed that can help individuals to respect and cope with the new phenomena that science brings, whether these imply that we might be alone in the universe or co-creatures of God with the ancient Martians. See article.

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