Tuesday, April 25, 2017

Popular Science: "The Future of Space Travel"


Popular Science offers a “Special Edition” mag “The Future of Space Travel”, 96 pages, from Times Books.

There are many short illustrated articles in 5 parts, “Places We’re Going”, “How We’ll Get There”, “How We’ll Survive There”, “Other Tools of Exploration.”.

There is a wide variety of interesting information. One fact is that Proxima Centauri, in a 3-star system that is the closest to the Earth, may have a rocky planet in the “GoldiLocks” zone. The shortest time that it is technologically possible to send a robotic probe on a photon light sail with laser accelerator would be about 20 years, which means it would take 24 years to get the photos and information back as to what the planet looks like.  It is about 8000 times as far to this star system as it is to Pluto.



The other most interesting section is “The Everyday Life of an Astronaut”.  This would be very important for a voyage to Mars, for example.  It raises questions as to who would go:  what about childless or single people?  The long exposure to zero gravity is bound to cause physical deterioration, so this is not a place for pretty preppies.  Essential body functions are different.  You bathe with soap that does not have to be rinse off but stays on the skin to disintegrate. Without gravity, it is hard for your body to sense when it needs to urinate.
 
There is an artist’s closeup of Europa on page 8, a closeup on Pluto on p. 16.  There is an article on space mining on p. 16.  I didn't see any discussion of Titan.

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