Wednesday, May 19, 2010

Finding oceans and continents on exoworlds and aftereffects of contact between two intelligent cultures

Welcome! "Alien Life" tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. Here's today's news:
g Abodes - A new way of comparing the color and intensity changes of light reflected off of Earth's surface to the flickers from exoplanets may help reveal the presence of oceans, continents and – possibly – life on alien worlds. See article.
g Life - A mass extinction of fish 360 million years ago may have set the stage for modern vertebrate biodiversity. The extinction occurred just as vertebrates crawled from the sea to land, and the few survivors were the evolutionary starting point for the vertebrates that survive today. See article.
g Cosmicus - Europe's second robotic space cargo vessel is headed for its South American launch site in preparation for a delivery mission to the International Space Station later this year. See article.
g Aftermath - Among scientists involved in the Search for Extraterrestrial Intelligence, it’s quite common to be focused on the future, ever mindful that it could take years, or even decades, to find a signal from otherworldly intelligence. But if historian Steve Dick has his way, astronomers will also turn their attention toward the past as they search for life beyond Earth — to discover the aftereffects of contact between two intelligent cultures. See article. Note: This article is from 2003.

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