Granted, lots of other countries do excellent work, there's no doubt about that, but the commitment level is different by a huge margin.
Just take a look at what NASA is doing right this very second. They just landed a rover on Mars; they have 2 satellites around Mars; they have satellites around Saturn, Mercury, and Vesta; they have spacecraft on their way to Jupiter and Pluto; they have a planet hunting space telescope which has discovered hundreds of extra-solar planets already; they have Hubble; they have an X-ray telescope; they have a gamma-ray telescope which just recently provided potential confirmation on the origin and nature of dark matter. Oh, and they have another operational rover on Mars. And this isn't even everything, nor does it touch manned spaceflight.
The ESA has been doing some pretty amazing work in the past few years (with Mars Express, Huygens, Rosetta, Planck/Herschel, XMM, Cluster, SOHO, and their cooperation on NASA missions and others) and Japan and others have been doing good work as well, but the budgetary commitment as a percentage of GDP is just not comparable. We shouldn't take NASA's successes and say "oh, well, a bunch of other nations helped out some too, so, go world!" We should give NASA their due, and we should give other space agencies their due as well, and we should challenge the world to support space science missions to the level they deserve.
This is an American achievement. If you aren't from the US, you should try to encourage your government to step up. If everyone committed at US levels by GDP, annual global space spending would be about $240 billion instead of $82 billion. Biomedical research is the same way.
It also plays well to the people who don't know any better, the people who say 'why are we spending all this money on space when I can't get a job?'. You'll notice that the straighter and more senior heads - Pete Theisinger the PM, and John Grotzinger the chief scientist, did not go all Team America during the press conference, but did make similar points - 'The money isn't sent to Mars, it's spent here on Earth' - again speaking to the pressure that they're under.
http://www.geospatialworld.net/index.php?option=com_content&...
However, if you actually want to get those things to the surface of Mars and let them do meaningful work, the best option is the US. ESA didn’t even manage a (successful) landing yet, Russia is failing constantly.
Not on Mars no (Beagle 2 was a bit anomalous, having a budget that would barely cover Nasa's stationary costs each year and wasn't secure until about half way through the project anyway. Very embarrassing from a PM point of view). But don't discount Huygens! That was pretty spectacular, especially given how much less we know about Titan.
Asside: I asked a few people who worked on the Huygens landing system why that worked so well but why ESA hasn't been able to recreate that success. They said, quick as a flash, project management. ESA used to PM their projects with a small, powerful project office. Now the sub a lot of the PM out to the big contractors, who seem to just do MS Word documents about how they can't deliver anything and it's someone else's fault.
You need good PMs (we all know this anyway right?). The MSL PM is also the MER (spirit and opportunity) PM, Pete Theisinger. He is a great man. There's a fantastic talk he gave a few years ago, that should delight anyone into ambitious and cool engineering projects, about the development of MER. You can see that he's the kind of guy you'd like to work for:
http://www.youtube.com/watch?v=Y7ZBLklsUys
Edit: typo.
> ChemCam ... developed by the Los Alamos National Laboratory and French CESR
> Alpha-particle X-ray spectrometer ... APXS was developed by Canadian Space agency.
> Sample analysis at Mars ... was developed by Goddard Space flight center, the Laboratoire Inter-Universitaire des Systèmes Atmosphériques (LISA) (jointly operated by France's CNRS and some Parisian universities) and Honeybee Robotics, along with many additional external partners.
> Radiation assessment detector ... was developed by Southwest Research Institute (SwRI) and the extraterrestrial physics group at Christian-Albrechts-Universität zu Kiel, Germany
> Dynamic Albedo of Neutrons ... provided by the Russian Federal Space Agency
> Rover environmental monitoring station ... provided by the Spanish Ministry of Education and Science