Who would sign up for a 40-year journey, especially if it turned out to be a one-way trip? Thoughts on interstellar crews and how to find them from Centauri Dreams.
Chandra Observatory blog - One of the lowest mass black holes ever observed in the middle of a galaxy has been identified.
Nextbigfuture - With 20 years notice, a volley or two of space-launched paintballs could deflect an asteroid.
Sung Wook Paek, a graduate student in MIT’s Department of Aeronautics and Astronautics, says if timed just right, pellets full of paint powder, launched in two rounds from a spacecraft at relatively close distance, would cover the front and back of an asteroid, more than doubling its reflectivity, or albedo. The initial force from the pellets would bump an asteroid off course; over time, the sun’s photons would deflect the asteroid even more.
Nextbigfuture - A summary of Adam Crowls examination of nuclear rockets and beam propulsion for interstellar travel
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