@DavidFreitag You know what's even more hysterical? That the guy's tweet was retweeted nearly 14k times and favorited 11.5k times, and not a single one of those bothered to comment, feed the troll. :)
OK I put us back on average 4 question per day, at least according to A51 (in reality, the stats are better, but that's a "statistical trend"). Now go answer some! :P
@TildalWave after looking at space.stackexchange.com/questions/2886/… I think the OP was asking a question that was very basic and your comments are asking for clarification of a much higher level question. I provided the simple answer.
Should I post more questions about this weeks TOTW now, or rather wait a day or two? Sundays seem terribly slow, apparently some are enjoying better weather than we do in my stretch of the woods :O
@JamesJenkins Ah sure, thanks! I'll go read it then. I just asked for clarification from OP, and met with somewhat condescending resistance from him. Wasn't the nicest thing to read first thing in the morning, I have to say. :{
@JamesJenkins +1 but I thought you could add to that list "having sufficient quantity of catalysts or biomatter to extract oxygen from carbon dioxide onboard" ... something like that
As for abundance of oxygen elsewhere in Solar system, or Universe in general ... here's a relevant Wiki with all the numbers and references:
The abundance of a chemical element measures how relatively common (or rare) the element is, or how much of the element is present in a given environment by comparison to all other elements. Abundance may be variously measured by the mass-fraction (the same as weight fraction), or mole-fraction (fraction of atoms by numerical count, or sometimes fraction of molecules in gases), or by volume-fraction. Measurement by volume-fraction is a common abundance measure in mixed gases such as planetary atmospheres, and is close to molecular mole-fraction for ideal gas mixtures (i.e., gas mixtures at...
in particular, this logarithmic scale graph tells the story pretty good:
@Everyone Ah feel free to improve it, if you think it could use any further clarification... I can't think of how to do that, my mind is currently in 20 places... 19 too many for a Sunday ;)
@Everyone It rings some bells but I don't remember it exactly either. Wasn't that during the Gemini and not Apollo? IIRC Apollo didn't use retros for Lunar missions, tho they might have for earlier ones before 10? :|
@Everyone You'd probably have to remove the payload to accommodate the weight and space requirements of LES so it can still crash to Earth, only slower? Why would you do that when you can insure your payload and later build another one for half the cost and keep the other half of the insurance money? :D
ah darn I just wanted to ask you to post it on meta so I can migrate it and we have one more place advertising our meta then, since it'd show where it came from LOL