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News Briefs 13-04-2010

Some mind bullets for you.

  • Breed bans, euthanasia and preemptive justice.
  • Making surgery scalpels from sound waves.
  • First baby given xenon gas to prevent brain injury.
  • Machines to choose your news.
  • New discoveries indicate ancient British sun worship.
  • For the world is hollow and I have touched the sky.
  • Alien life on Titan would stink.
  • Do we live inside a wormhole’s neck?
  • Why are 25 hedge managers worth 658000 teachers?
  • What happened at Angkor Wat.
  • Dolphins die in mass stranding.
  • South Dakota teenagers flee UFO as ground lights up, buzzing sound emitted.
  • Discovery that quasars don’t show time dilation mystifies astronomers.
  • Backwards alien planets challenge theories.
  • Four hurdles for a scientific theory of music.
  • Australian laser threatens nuclear security.

Quote of the Day:

Sometimes the appropriate response to reality is to go insane.

Philip K. Dick

  1. 30% Porosity is Hollow?
    When I first read Iosef Shklovskii’s early 1960s speculations about a hollow Phobos it was a revelation, but of course when I read it in c.1980 was far too long after the ‘fact’ for it to be so under-remarked in the wider world and I learnt later his atmospheric modelling was too unlike the real Martian atmosphere to be correct.

    So seeing the “Discovery Mission” getting into a lather over a report of 30% porosity in Phobos doesn’t arouse the same feelings I felt when I read “Intelligent Life in the Universe”. A hollowed out asteroid should be more like ~50-80% hollow, not a measly 30%.

    Incidentally don’t be phased by an possibly artificial structure being covered in craters – anything that big left unprotected in space for billennia will be cratered rather thickly. Saturation cratering – the point at which impact debris covers old craters so the degree of visible cratering remains the same – is reached after just a few to 100 million years. Vast space-arks left in a parking orbit will look like natural asteroids after such astronomical ages have passed.

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