Cerulean Spark (ceruleanspark)'s status on Saturday, 01-Nov-14 08:24:20 UTC

  1. Cerulean Spark Cerulean Spark

    @metaltao you actually get all sorts of interesting optical phenomena when you have an unrestricted view of the horizon http://en.m.wikipedia.org/wiki/Green_flash

    Saturday, 01-Nov-14 08:24:20 UTC from web in context