Thursday, May 03, 2012

How long Titan’s chemical factory has been active and ancient star with arsenic and selenium found

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 - The Big Bang produced lots of hydrogen and helium and a smidgen of lithium. All heavier elements found on the periodic table have been produced by stars over the last 13.7 billion years. Astronomers analyze starlight to determine the chemical makeup of stars, the origin of the elements, the ages of stars, and the evolution of galaxies and the universe. Now for the first time, astronomers have detected the presence of arsenic and selenium, neighboring elements near the middle of the periodic table, in an ancient star in the faint stellar halo that surrounds the Milky Way. Arsenic and selenium are elements at the transition from light to heavy element production, and have not been found in old stars until now. See article.
g Abodes - Saturn's moon Titan is well known as one of the most complex chemical environments in the Solar System. Now scientists are trying to determine just how long the “chemical factory” of Titan has been active. See article.
g Cosmicus - A private company has announced plans to mine Near-Earth Asteroids for raw materials ranging from water to precious metals. See article.

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