Friday, November 10, 2006

What spacedust tells us about early solar system, development of photosynthesis and passenger-carrying spaceliner company

Welcome! “Alien Life” tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. You may notice that this and future entries are shorter than usual; Career, family and book deal commitments have forced me to cut back some of my projects. Now, here’s today’s news:
g Abodes - In this interview, Monica Grady discusses the varieties of dust and meteorites that have fallen to Earth, and explains what they tell us about the history of the solar system and its potential for life. See article.
g Life - The use of trace metals by modern organisms probably derives from changes in ancient ocean chemistry. The availability of trace metals is believed to have been brought about by the biologically caused rise in atmospheric oxygen some 2.3 billion years ago. The development of photosynthesis affected the availability of trace metals, and therefore changed the course of evolution for life on Earth. See article.
g Intelligence - Happy people are healthier people, research suggests. See
g Cosmicus - For Virgin Galactic — the passenger-carrying spaceliner company — plans are rapidly taking shape to offer suborbital space flights in the near-term but also to eventually offer point-to-point rocket travel around the globe, as well as to space hotels, and trips to the Moon. See