Not aliens. We are told that they are made by magnetars, a type of neutron star.
Sheldon:Well, like most astronomy press releases in the past decade, it is 3/4 hype, and 1/4 data, and it has nothing to do with dark matter. Since many people never read beyond the headline, the title is written to be as provocative as possible without outright lying.
The reader who sent this tip notes, “Consider me skeptical but it’s interesting that design inferences are fine so long as it’s just aliens…” Actually, reader, some science personalities will believe darn near anything about anything as long as it IS aliens.
For one thing, as Search for Extraterrestrial Intelligence (SETI)’s Seth Shostak points out, the bursts are from widely varying locations, which is unlikely unless the aliens inhabited the whole universe.