Dissipating density challenges and observes
evaporating water desublimates into ice crystals
EARTH DAY METEOR SHOWER: Earth is passing through a stream of debris from ancient Comet Thatcher, source of the annual Lyrid meteor shower.
Prof. Peter Brown of the Universiy of Western Ontario reports that “the Canadian Meteor Orbit Radar (CMOR) just finished processing orbital data from last night and the Lyrids are showing up quite nicely. 180 more words
Whether it’s Russia’s military adventures in the Crimea or China’s less-than-neighborly attempt to exert influence in the South China Sea, international tensions are on the rise—and if those tensions lead to accidents in space, neither the community of nations nor the US has the tools to prevent such a conflict from spinning out of control and costing billions. 370 more words