Sending our own signals to ETI and star’s bow shock

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 - Just as some drivers obey the speed limit while others treat every road as if it were the Autobahn, some stars move through space faster than others. NASA's Wide-field Infrared Survey Explorer, or WISE, captured this image of the star Alpha Camelopardalis, or Alpha Cam, in astronomer-speak, speeding through the sky like a motorcyclist zipping through rush-hour traffic. The supergiant star Alpha Cam is the bright star in the middle of this image, surrounded on one side by an arc-shaped cloud of dust and gas - a bow shock - which is colored red in this infrared view. See article.
g Abodes - NASA's Messenger probe promises to show us a whole new Mercury when it arrives in orbit around the planet. See article.
g Life - A pathway whereby bacteria communicate with each other has been discovered by researchers. The discovery has important implications for efforts to cope with the spread of harmful bacteria in the body. See article.
g Intelligence - One of the most complex human mysteries involves how and why we became an outlier species in terms of biological success. See article.
g Message - Recent discussions within the SETI community have thoroughly explored the issue of whether people with access to radio telescopes should send powerful signals to alien civilizations without some process of prior international consultation. In particular, those exchanges have focused on the question of "Active SETI." See article.

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