I see a lot of emotionalism in the anti-human spaceflight crowd.
Seems to me the emotionalism lies with those who have romantic notions about human space travel.
No romance here.
Spaceflight is very tough, never said it wasn't. My point is this. How many scientists in the field here have been replaced by rovers?
I can't think of too many.
And the anti-human spaceflight folks just refuse to acknowledge the growth in LV size--pushed by human spaceflight--allows unmanned systems to go even farther. That is an unassailable fact.
The problem is that many planetary scientists just want to raid this or that LV budget, just to go back to the bad old days of nickel and diming NASA to death with endless Delta II launches.
Let's take a look at J.I.M.O.
http://news.bbc.co.uk/2/hi/science/nature/2983100.stm
http://www.thespacereview.com/article/32/1
http://www.spacedaily.com/news/spacetravel-04zr.html
"Still, just getting JiMO aloft will be difficult for NASA."
"Prometheus will be a challenge, said Mike Lembeck, in charge of requirements for NASA's Exploration System Directorate. When completely deployed in space, JiMO and its Prometheus power and propulsion system will be more than 100 feet long. Currently, Lembeck said, there are no existing space boosters capable of lifting the JiMO package into space as a complete unit -- NASA's preferred plan."
That is changing.
Also note what Alan Stern said about Falcon Heavy:
http://thespacereview.com/article/1846/1
"
The rocket offers so much lift capacity relative to its competitors that it also will be able to enable co-manifesting of science missions with commercial satellites and remove the tight launch mass constraints on science satellites and planetary probes that often drive development costs."
Now, had planetary scientists had to help fund its development, they might have wanted to kill it. But since Musk footed the bill, Stern was finally able to tell the truth--that LV growth is a
good thing for science missions.
Still, Falcon has about the same shroud diameter as EELVs and it does have some of the same limits
http://www.americaspace.com/?p=34964
Look again here--
http://www.wired.com/2014/02/mars-roversample-return-pre-phase-1988/
--And note what was said by Donna Pivirotto, MRSR Rover manager at JPL, and how she
"lamented that “large ‘Godzilla’ rovers which simply roll over all obstacles would be precluded by launch vehicle mass and volume constraints.”
That is no longer an issue with SLS, which has no such limitations. But since folks have to compete for funds, planetary scientists cut their noses off to spite their faces. What MSFC does is just as necessary as JPL.
Now, personally,
I don't care whether humans go BEO ever again. I want to see LV growth for its own sake--in that we have gone as far as we can go with these bomb-disposal robot toys we have now.
The LV growth demanded by human spaceflight will also help planetary scientists.
Unhelpful value judgments disguised as "studies" published for no other reason than to kill off competing programs--those are the real problems.
Imagine you have a group of Vikings each with his own log he uses to travel down small streams, to do small missions. Now Leif Griffin wants all those logs so he can build a long ship that can carry all of them.
But each Viking holds on to his log for dear life, yelling "Mine! Mine!"
So much for crossing the Atlantic.
The current field of space scientists are doing the very same thing, and are equally short-sighted.
O/T Asteroid mining candidates
http://arxiv.org/abs/1406.5027