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SETI@home Science :
why don't we "hear" ourselves?
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Author | Message |
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Tom Philippart Send message Joined: 29 May 06 Posts: 23 Credit: 949,840 RAC: 0 |
When the news about voyager sending garbage messages came up recently I wondered why doesn't SETI detect voyager's transmission the earth? Voyager's messages are targeted to earth so we are supposed to notice them... I'd like to know why we are not hearing voyager. Thanks |
skildude Send message Joined: 4 Oct 00 Posts: 9541 Credit: 50,759,529 RAC: 60 |
yes we've heard back from voyager. I dont recall the last "bleep" that was sent our way but it still appears to be operating. Though I do recall reading that the nuclear4 fuel that was supposed to warm the hardware was running low and this would eventually would cause the probes systems to fail Heck I went ahead and googled. Remember google is your friend In a rich man's house there is no place to spit but his face. Diogenes Of Sinope |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
When the news about voyager sending garbage messages came up recently I wondered why doesn't SETI detect voyager's transmission the earth? Because voyager doesn't transmit on a frequency near 1420 MHz. Joe |
Tom Philippart Send message Joined: 29 May 06 Posts: 23 Credit: 949,840 RAC: 0 |
yes we've heard back from voyager. I dont recall the last "bleep" that was sent our way but it still appears to be operating. Though I do recall reading that the nuclear4 fuel that was supposed to warm the hardware was running low and this would eventually would cause the probes systems to fail I asked why seti doesn't hear it. |
Tom Philippart Send message Joined: 29 May 06 Posts: 23 Credit: 949,840 RAC: 0 |
hmm I've we're not even listening to everything we're sending in space, how are we supposed to find the alien signal... |
ML1 Send message Joined: 25 Nov 01 Posts: 20265 Credit: 7,508,002 RAC: 20 |
... how are we supposed to find the alien signal... That is where we make "best guesses" as to what an alien would do if they wanted their signal to be heard and recognised. Hence all the assumptions for searching around the "water hole". Our tech and resources are far far too limited to do anything better at present. Meanwhile, there are some good spinoffs and other discoveries... Keep searchin', Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30640 Credit: 53,134,872 RAC: 32 |
When the news about voyager sending garbage messages came up recently I wondered why doesn't SETI detect voyager's transmission the earth? Which SETI project? SETI@Home does not listen to the frequency Voyager transmits on, nor does the dish they use point in its direction. As a real system test I'd like to see them use a receiver at the frequency of an interplanetary probe and sweep the dish over it a couple times just to be 100% sure the entire chain all the way through to NTPCKR flags it. That just to supplement the software injections they have done to system test it, not that I suspect anything wrong. |
DJStarfox Send message Joined: 23 May 01 Posts: 1066 Credit: 1,226,053 RAC: 2 |
As a real system test I'd like to see them use a receiver at the frequency of an interplanetary probe and sweep the dish over it a couple times just to be 100% sure the entire chain all the way through to NTPCKR flags it. That just to supplement the software injections they have done to system test it, not that I suspect anything wrong. I like that idea. The ISS could transmit a test message pretty easily. |
skildude Send message Joined: 4 Oct 00 Posts: 9541 Credit: 50,759,529 RAC: 60 |
I think he was thinking of something a bit more distant than just outside the atmosphere. In a rich man's house there is no place to spit but his face. Diogenes Of Sinope |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30640 Credit: 53,134,872 RAC: 32 |
I think he was thinking of something a bit more distant than just outside the atmosphere. Yes, something that would have an expected doppler shift for something not in earth's gravity. |
DJStarfox Send message Joined: 23 May 01 Posts: 1066 Credit: 1,226,053 RAC: 2 |
I think he was thinking of something a bit more distant than just outside the atmosphere. So, then the moon wouldn't count either? I suppose they could put something on Mars if properly designed for this purpose. |
skildude Send message Joined: 4 Oct 00 Posts: 9541 Credit: 50,759,529 RAC: 60 |
The Cassini probe consistantly sends data back from Saturn and the New Horizons probe no problem sending back info on its way to Pluto. Perhaps someone should look into these In a rich man's house there is no place to spit but his face. Diogenes Of Sinope |
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