...4) I have never heard of a seismic survey instrument being used for seismic monitoring. I don't know if this is even possible, seismic surveys and earthquakes generate signals in quite different frequencies....
ESA commissioned this excellent video explaining how Philae works using lots of Lego:
Quote from: Dalhousie on 01/15/2014 08:19 pm...4) I have never heard of a seismic survey instrument being used for seismic monitoring. I don't know if this is even possible, seismic surveys and earthquakes generate signals in quite different frequencies....Now we have. (12:45 onwards. #TIL Philae's apparently carrying both types of instruments. Electromagnetic wave interrogtion, as well as acoustic.)Quote from: Hobbes-22 on 01/23/2014 03:07 pmESA commissioned this excellent video explaining how Philae works using lots of Lego:
The rover is having a problem:http://news.xinhuanet.com/english/china/2014-01/25/c_133072906.htmChina's moon rover monitored with abnormityEnglish.news.cn 2014-01-25 10:48:05BEIJING, Jan. 25 (Xinhua) -- China's moon rover "Yutu" (Jade Rabbit) has had an abnormity, and scientists are organizing an overhaul, the State Administration of Science, Technology and Industry for National Defence said on Saturday.I think that "abnormity" should be "anomaly." (They probably meant "abnormality" which is not quite correct.)
............ But the master is very shy, embarrassed to tell you who he is (or may be afraid of everyone that he is not well written ............
"At least they now have around 14 days or so, to analyse any data on Yutu malfunction and prepare upload commands that may rectify problem or at least provide a workaround."Alas, no - the problem seems to be that the camera mast and high gain antenna could not be protected from the cold of the lunar night - over the previous night the mast folded back into a box on the rover top and was covered by one solar panel. That closed compartment was warmed by a small radioisotope heat source. The other solar panel was oriented to face the rising sun next morning. This time the mast could fold back but the solar panel could not fold over it to enclose it. So there may be major repercussions from this that 14 days of analysis will not help to resolve.Phil
EDIT: Ok, it seems, from Blackstar's post that it's only the mast that'll be affected. That's more optimistic than the entire rover.