Morgan, We haven't dug into the whole discussion on wanting to deflect an incoming asteroid from hitting Earth. We know that's sexy in the media, and that's...
4021
Ueli Scheuermeier
uscheuermeier
Feb 1, 2011 10:32 am
Morgan, Concerning binaries, I think you missed our discussion earlier on this: What the orbital jocks don't tell us is what happens when "blobs of floating...
4022
EOS Mars Program
bty580492
Feb 1, 2011 9:33 pm
"....The mission's discoveries of previously unknown objects include 20 comets, more than 33,000 asteroids in the main belt between Mars and Jupiter, and 134...
4023
Ueli Scheuermeier
uscheuermeier
Feb 1, 2011 10:37 pm
Jan, I feel I should again point out that whatever comes near Earth may be a NEO, but not necesseraly the kind of NEA we're aiming for. Meaning: A comet or...
4024
EOS Mars Program
bty580492
Feb 1, 2011 11:14 pm
Ueli, Well....we know about 134 more NEOs than we knew about before which are potentially 134 saved missions that need not have scouts sent to them if they are...
4025
Ueli Scheuermeier
uscheuermeier
Feb 2, 2011 4:10 pm
Right Jan, What's the decision criteria what a "target" is? I guess it's plain simple deltaV. Right now I think that's the only criterion we need to apply...
Jan, A NET???? What net can catch an object that travels at orbital speeds? I would expect a whizzing piece of space junk would simply whizz through the net,...
4028
EOS Mars Program
bty580492
Feb 2, 2011 9:17 pm
Well, I am only the messenger here, Ueli....! I assume they orbit the net in the direction that most of the debris they target for that pass is travelling in. ...
4029
Ueli Scheuermeier
uscheuermeier
Feb 2, 2011 9:54 pm
Jan, I know you're just "the messenger". I was just trying to understand how these space nets would work. I'm still not getting it.... I think your idea of...
Jan, Wait a minute.... they're talking of aerogel, not a "net"! How you do a "net" out of aerogel escapes me. And then I read "metal". Aerogel made of metal?? ...
4032
EOS Mars Program
bty580492
Feb 3, 2011 9:11 am
Innovation often seems outrageous at first, Ueli....! It is very unlikely that such news would be released publicly without a factual foundation. Clearly they...
4033
Ueli Scheuermeier
uscheuermeier
Feb 3, 2011 9:17 am
Jan, that's not the point. The point is: We don't know how this space net is supposed to be catching debris at orbital speeds (hey, they want a polar orbit!!)....
4034
mtmorganism
Feb 13, 2011 9:10 pm
post your links for tomorrow nights encounter http://www.jpl.nasa.gov/news/news.cfm?release=2011-044b&rn=news.xml&rst=2905 also, these guys are on it ...
4035
mtmorganism
Feb 13, 2011 10:03 pm
Agee. Dv is critical, but would like to find something with a 2 year or less trajectory, and a "peanut" profile also. think the peanut will have lots of...
4036
mtmorganism
Feb 13, 2011 10:33 pm
They actually just did a study for that, but it was for the incoming impactor on earth. They found that a rubble pile should shake loose, expand a bit, then...
4037
Ueli Scheuermeier
uscheuermeier
Feb 13, 2011 11:03 pm
Morgan, Huh? Why would a contracting cloud of debris "create a sphere, everytime"? Given Coriolos effects, I would be very surprised for that to happen!...
4038
mtmorganism
Feb 13, 2011 11:29 pm
... Missed this while in Vegas. Apollo becomes an Aten http://neo.jpl.nasa.gov/news/news170.html...
4039
mtmorganism
Feb 14, 2011 12:45 am
yes but nearly all the techniques being discussed by the impactors are directly coincident with our mining tech. Orbit Mech Attachment orbit ID and acquisition...
4040
Ueli Scheuermeier
uscheuermeier
Feb 14, 2011 7:42 am
Morgan, Have you had a look at one of our earliest milestones: - The Asteroid Environment and what it means for Mechanical Engineering - Options for attaching...
4041
mtmorganism
Feb 14, 2011 8:40 pm
Nope, they are still struggling with options and ideas too. Even boeing and lockheed are stumped. Only new idea is the gravity tractor, and that takes years. I...
4042
Ueli Scheuermeier
uscheuermeier
Feb 14, 2011 8:56 pm
Morgan, I feel there's some mission drift here. Just for the record: We have NOT discussed moving whole asteroids. Doesn't make sense as far as I know if we're...
4043
mtmorganism
Feb 14, 2011 9:04 pm
Then how did planets form in the accreation disk theory? this has been a huge prob for me in planetary science. ALL the science theory says that the forms will...
4044
mtmorganism
Feb 14, 2011 10:40 pm
well, you are saying you only want low Dv NEA's. You don't get a choice of what materials they are then. Got to prep for all types. What if they are nickle...
4045
Ueli Scheuermeier
uscheuermeier
Feb 15, 2011 10:25 am
Morgan, What's the problem? Most asteroids out there seem to be floating blobs of rubble, and most of them seem to be binaries or touching binaries...
4046
mtmorganism
Feb 15, 2011 11:40 pm
some of the best stuff on the encounter here http://www.unmannedspaceflight.com/index.php?showtopic=6868&st=180 and a great animation ...
4047
mtmorganism
Feb 15, 2011 11:56 pm
Actually , no. This is directly related to mining issues. These bodies are agglomerations of some gravel, a few big rocks, and a surface basically burnt to a...
4048
Ueli Scheuermeier
uscheuermeier
Feb 16, 2011 5:03 am
Morgan, What do you mean "no visible crater". The sites you mention certainly discuss a crater that is fairly plain to see. Not saying the impact might not...
4049
Ueli Scheuermeier
uscheuermeier
Feb 16, 2011 5:16 am
Morgan, So: Sandbag effect explains floating blobs of rubble and the reason they're peanut-shaped?! What you refer to with regard to physical properties of...
