Michael Rogers' Star Talk Weblog
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 Tuesday, August 13, 2002


News: Voyager spacecraft still chugging along out of the Solar System -- http://www.nytimes.com/2002/08/13/science/space/13VOYA.html



Comment: I remember how exciting it was 25 years ago to see the first close-up pictures of Jupiter, then later Saturn, Uranus and Neptune. NASA gets hammered for their screwups, but this was one project they did right.



The Voyagers are still ticking, with one of them cruising out the "top" of the Solar System, and other out the "bottom". They are so far away that it takes 23 hours for a round-trip radio signal to the craft. Their electricity is expected to last until 2020, but they'll still drift for millions of years after that. Likely, that will make them the longest-existing human artifacts. By that time, we'll all have been assimilated into the Borg Collective.



News: Study finds no need to guzzle all that water -- http://makeashorterlink.com/?L29842D71



Comment: Turns out that the so-called importance of drinking at least eight 8-ounce glasses of water a day is folklore. For healthy, keyboard-clacking office workers like myself, there's plenty of water in the food we eat, the coffee and pop we slurp and the occasional glass of tap water.



News: Heat waves kill more people than any other natural disaster -- h ttp://www.nytimes.com/2002/08/13/science/earth/13HEAT.html



Comment: It's stealth death because heat strokes kill the poor and elderly who are trapped behind closed, un-air conditioned doors. But this article says awareness of the dangers of heat waves have led to programs like more visitations of shut-ins during hot weather.



Interestingly, heat strokes are more of a problem here in the North where there is greater temperature variation over the course of the year. In the South, people are more acclimatized.



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