Astronomy Picture of the Day



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zorg.ch
#96364 by @ 23.11.2006 00:00 - nach oben -
Credit:


Explanation:
Please wait while one of the largest mobile machines in the world crosses the road.

The machine pictured above is a
bucket-wheel excavator used in modern
surface mining.

Machines like this have given humanity the ability to mine minerals and
change
the face of planet Earth in new and dramatic ways.

Some open pit mines, for example, are visible from orbit.


The largest excavators
are over 200 meters long and 100 meters high, now dwarfing the
huge NASA Crawler that
transports space shuttles to the launch pads.

Bucket-wheel excavators can dig a hole the length of a football field to
over 25 meters deep in a single day.

They may take a while to cross a road, though,
with a top speed under one kilometer per hour.




Credit & Copyright
zorg.ch
#96370 by @ 23.11.2006 07:41 - nach oben -
me müessts chli tune. under 1km/h isch äbä scho chli gär langsam...
zorg.ch
#96368 by @ 23.11.2006 06:24 - nach oben -
impressive
zorg.ch
#96372 by @ 23.11.2006 09:33 - nach oben -
ist sschon ein wenig gross, aber ob es am himmel krtzt, dass es ein astronomy pic of the day wird ist fraglich...
zorg.ch
#96373 by @ 23.11.2006 09:45 - nach oben -
haha, yeah :-)