Skies of alien worlds and the hunt for E.T.

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 Stars - Scientists were startled when they discovered in 2004 that the center of our galaxy is emitting gamma rays with energies in the tens of trillions of electronvolts. Now astrophysicists have found a mechanism that might produce these high-energy rays. The black hole at the center of our Milky Way could be working like a cosmic particle accelerator, revving up protons that smash at incredible speeds into lower energy protons and creating high-energy gamma rays. See article.
g Abodes - What would the skies of alien worlds look like? See article.
g Message - E.T. may have "phoned home" back in 1982, but in the world outside of popular cinema the hunt for extraterrestrial life continues. See article.

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