By Science News, 12:09 PM May 20, 2010

ET, stay home
Your excellent editorial in the April 24 issue of Science News (“An intelligent ET would probably just stay home”) explained the most obvious reasons for the unlikelihood of an extraterrestrial message, let alone visitors.

Additional obstacles worth mention are 1) the gigantic retro-rockets, parachutes and heat shields required for braking a super-speeding vehicle, and 2) the galactic power needed for aligning the astronomical egos of spaceship builders, launchers and ...

Source URL: https://www.sciencenews.org/article/letters-61?mode=magazine&context=709