23 October 2011

Duck! Another satellite coming down today

Somewhere between 10:30 am and 4:00 pm on Sunday Australian eastern daylight saving time, a German x-ray space observatory satellite called ROSAT is coming down. As I'm about to post this, it is about 10 minutes from passing over Alice Springs and Weipa.


At 2.7 tons (whatever that is in the real measurements that the rest of the world uses), it is about half the size of the UARS satellite that came down recently, with some 30 pieces expected to make it through re-entry and come to the ground at some 450kph, over an 80km wide track.

As is the way with these things, there's no idea where yet, because over such a long time span, almost all of the Earth's surface is traversed. The one good thing is that, despite the incredible sprawling of our world population, most of said Earth's surface is still actually ocean or icecap or similarly uninhabited area. Meanwhile the German "managers" of this satellite seem quite pleased to advise that they don't think it will come down over Europe - self-preservation at its best and bugger the rest of the world. I note they are saying where IS in the target zone though...

If you are worried - or interested - the best ways to keep right up to date are via the Twitter hashtag #rosat and this website does live tracking of its flightpath. (Although I had trouble getting it to render properly in Chrome, it was fine in Firefox.) I've also heard that Alfoil hats offer some level of protection, but claim indemnity from all damages that may result from reliance on such a defence.

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