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In the book "Voyager : seeking newer worlds in the third great age of discovery" they said that as the crafts got further out they had to use large radio antenn
by stewiecat 15y ago
In the book "Voyager : seeking newer worlds in the third great age of discovery" they said that as the crafts got further out they had to use large radio antenna's in Spain, Hawaii, and Australia to lock onto the signal, creating an Earth-scale virtual antenna.
Truly amazing stuff.
- vbtemp 15y agoThese are part of NASA's Deep Space Network, used to communicate with the fleet of interplanetary spacecraft (as well as plenty of satellites and the ISS). The you mentioned the three largest ones, each with a 70 meter dish.
- mturmon 15y agoAnd here's the pic: http://deepspace.jpl.nasa.gov/dsn/images/picture_70_bw_lg.jpg http://deepspace.jpl.nasa.gov/dsn/images/picture_70_bw_lg.jp...
- jules 15y agoNow that we're talking about big telescopes I can mention LOFAR: http://en.wikipedia.org/wiki/LOFAR http://en.wikipedia.org/wiki/LOFAR It's interesting in that it consists of 15.000 small antennas and they are using computers to combine the signals which effectively gives you a 1 square kilometer "dish".