There's a great segment in Douglas Adams's Mostly Harmless, the 5th book in the ever-increasingly misnamed Hitchhiker's Guide to the Galaxy Trilogy, about the limitations of human perception.  In it, the latest version of the eponymous Guide is an intelligent cyborg-type creature resembling a bird, and it tries to explain the nature of reality by shining…Read more Filters

Orbits, and Orbital Decay (Astronomy: Week of 1/21/18)

In case you haven't heard, China's first space station, Tiangong-1 is about to make an uncontrolled re-entry into Earth's atmosphere.  That's an 18,750 pound (8,500 kg) chunk of stuff, about to fall in a blaze of glory.  We don't know when, and we don't know where.... but probably some time in March, 2018. To understand…Read more Orbits, and Orbital Decay (Astronomy: Week of 1/21/18)