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Video: '7 minutes of terror' for next Mars probe

6/25/2012 02:54 PM EDT
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Joseph.Schachner
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re: Video: '7 minutes of terror' for next Mars probe
Joseph.Schachner   6/25/2012 8:11:30 PM
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The delay was when they went behind the moon and were out of communication for many minutes. Not radio wave propagation delay.

Tim W
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re: Video: '7 minutes of terror' for next Mars probe
Tim W   6/25/2012 7:34:10 PM
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Is it irony or subtle humor that the graphic at about 0:21 says "500,000 LINES OF [sic] COD3", followed by "ZERO MARGIN OF ERROR"? Just hoping we're not back to the era of the km/miles debacle and sensors on spring-loaded legs without debouncing.

green_ee
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re: Video: '7 minutes of terror' for next Mars probe
green_ee   6/25/2012 7:24:20 PM
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Let's hope they dont mix-up English and Metric units again..... Seriously, though, I'm curious how much testing was (or could be) done here on Earth given Martian gravity is 38% of Earth's.

David.Burton
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re: Video: '7 minutes of terror' for next Mars probe
David.Burton   6/25/2012 7:21:16 PM
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They should name this thing Schrödinger's lander.

chipchap42
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re: Video: '7 minutes of terror' for next Mars probe
chipchap42   6/25/2012 7:18:23 PM
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I love the fact that at 0:23, "Code" is spelled incorrectly (Cod3). Im really hoping that was a joke, otherwise my faith in them getting all 500,000 lines correct just took a bit of a nosedive...

Kevin Krewell
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re: Video: '7 minutes of terror' for next Mars probe
Kevin Krewell   6/25/2012 7:16:29 PM
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That is a lot of unproven technologies to try all on the same mission. The reasoning is logical, but the end result could be a catastrophic waste of time and money. I'd be interested to hear what JPL's engineers calculated was the probability of success.

george.leopold
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re: Video: '7 minutes of terror' for next Mars probe
george.leopold   6/25/2012 4:22:45 PM
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Comms delays for Apollo was more like 2 seconds, and there was constant telemetry flowing back to Houston mission control during lunar descent. Indeed, the LM crews were always being told to realign their antennas so Houston could continue receiving systems telemetry and voice. The difference of course was that there were two humans aboard. We're a long way from a manned Martian landing.

nicolas.mokhoff
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re: Video: '7 minutes of terror' for next Mars probe
nicolas.mokhoff   6/25/2012 3:42:33 PM
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Could the 14-minute waiting time be compared to the anticipation that the Cape Canaveral control room experienced waiting for the Apollo missions to the moon back in the 1960s? Seems then there was also a waiting period before confirmation that the Eagle had landed. Maybe this is much more hazardous, and good that it is unmanned.http://www.youtube.com/watch?v=6R3j1NU2nQM

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