26 June 2013

Mapping Our Cosmic Main Street

Milky Way seen from Kitt Peak National Observatory
Despite the fact that we can peer outward with our telescopes into deep space for billions of light-years, our local celestial landscape is downright murky.  I write about this conundrum in my latest Natural History column, where I discuss how astronomers first tried to map the Milky Way's spiraling arms. Click here to check it out.


  1. Hi, like your blog but the PDF's are for some reason hard to read for they are hard to open. That sucks.

    1. Hmmmm.....thanks for letting me know. There's no problem on my end. I wonder if it depends on the browser you use.