pax said:
Well looks like good old over engineered probes like viking tho expensive are the way to go now... And no more air bag landings I bet they couldve cracked something on rover...
I say under a billion a prob dont bother...
That's been tried before, it doesn't solve the problem.
The fundamental problem (despite the patriotic chest beating we seem to hear round here) is that landing on Mars is just plain difficult and risky.
Viking got lucky. Sure it was a well designed, built and executed project, but it also got lucky.
The problem with spending
even more on probes is that fundamentally there's a limit to how much you can reduce the risk. By spending more you are increasing the cost-to-risk ratio, if that makes sense.
This is why "faster, cheaper, quicker" makes sense, because the loss of any individual probe is a blow, the financial loss is reduced. It doesn't do much for the people who work for 5-10 years on that probe of course.
The problem with "faster, cheaper, quicker" is that it generally gets morphed into "faster, cheaper, fewer", rather than "faster, cheaper, more", which is what it's supposed to mean. For the price of the 2 NASA rovers we could have built 20 Beagles, and even with the worst luck you might reasonably expect 5-10 of those to land safely and operate for a while. Trouble is, that's never going to happen. We get one chance.
The situation for NASA isn't much better, especially in a risk averse society.