Re: @Anonymous Coward 14:32 GMT
Vladimir Plouzhnikov writes...
"Robotic missions only make sense as a precursor to manned missions."
Will people be going swimming in the oceans of Europa, then? It's not even desirable to put people below the Antarctic ice, so there's limited interest in making a submarine for humans to go diving on Europa.
"Therefore, the cost of robotic exploration is additive to that of the manned programs. Outside of that context, the robotic exploration can only be justified in the areas where the manned programs are premature or currently impossible (as the examples you cited with Venus etc)."
Maybe in the far future it'll be possible to walk around on Venus, but the robots can do the science adequately until then, I think.
"So, one type of robotic "exploration" of Mars, Moon (rovering around) is a net loss - the money spent on activities, which will have to be redone all over again by the manned missions. Their only purpose is the appropriation of funds, which would otherwise be completely withdrawn by the respective governments. It's like maintaining a camp fire even when you don't have any food to cook (and when it's quite warm around) for fear that if you put it out you will not be given matches with which to light it again."
Yes, rocket scientists have to keep getting the money (if only to stop it being spent on banks, wars, quangos, expenses, and all that), but maintaining expertise is vital, too. In addition, you have to be able to send the relatively small payloads before you start building that giant spacecraft for humans, with all the essentials required for a multi-month (or multi-year) mission. So, sending robots is essential, and it's also relatively cheap compared to the effort required for human missions - you can write those costs off, because it's work you have to do, anyway. And the race to the moon proved that delivering humans anywhere is a step up from sending probes, as the Soviets will attest.
"P.S. I didn't quite understand your remark about the Apollo missions. The Apollos were manned, right?"
Yes, but many people seem to think that Apollo was just flag-waving and golf. That's like claiming that the unmanned Mars missions haven't achieved anything.