space travel

How High the Moon? 4 October 2013

Book Review: ‘Dreams of Other Worlds’ by Chris Impey and Holly Henry
Where the Milky Way’s missing arms went and other tales of astronomical discovery.
[Wall Street Journal]

Alzheimer’s and space travel 3 January 2013

Does radiation cause Alzheimer’s?
We don’t really know, and it’s not clear how it affects space travel.
[Slate]

The 40-year itch 5 October 2011

How to build a really awesome spaceship, maybe
Would-be space explorers, scientists, and a couple of crackpots gather at DARPA’s 100-Year Starship Symposium to try to get interstellar travel unstuck.
[Slate]