Jeff7
Lifer
- Jan 4, 2001
- 41,596
- 20
- 81
Originally posted by: Tom
too bad our bodies and the Earth were designed before the metric system. :laugh:
The old measurements are a lot cooler for everything but science.
Before the English system too. Before any system, really. Except perhaps for the length of a strand of spaghetti, and the diameter of a meatball.
Some off the shelf technology. Or at least more of it than they used to before NASA's whole Better, Faster, Cheaper initiative went through. If they had more support satellites in orbit of Mars, they could probably send several more of the MER's to wander around awhile.Originally posted by: IGBT
..they really are better off with bots. They go from the drawing board to launch pad faster and more off the shelf technology can be used.
Of course, more money is needed already to upgrade and maintain the Deep Space Network system. The more spacecraft we have out there trying to talk to us, the more difficult it is to schedule everybody in. And with no redundancy, a problem with one spacecraft means that all efforts may be redirected to finding it and getting it working again. When the Mars Global Surveyor went offline, some data passes for other spacecraft were aborted because significant DSN time was needed to send commands and listen for replies. Or there's the Voyager probes - they need the big 70 meter dishes for the signal to be received. The Voyagers have 20 watt transmitters, but by the time it gets to Earth, it's spread out considerably, so there's less than 10^-16 watts hitting the antenna.
I'm just of the opinion that sending humans to the Moon was a bit of a publicity stunt then, just as it is now. Sure we can do it, but it's not really necessary. Robots will continue to increase in intelligence and capability. Even the MERs are smarter now than they were when they were launched, thanks to software updates. They gained visual odometry early in the mission, instead of only relying on how many times the wheels turn. Now being tested is a system where the rover can be shown a target, drive to it, and decide if it is safe to deploy its instrument arm. Before, the rover team would have to wait for end-of-drive images to come down, check them for safety, adjust the rover's position if needed, and then deploy the arm. This new programming will eliminate this time consuming process by letting the rover figure out a way of getting itself to a safe place at the target.
Once we've exhausted the capabilities of robots, and it really is required to send humans to get the job done because no robot could do it, then we should seriously consider sending someone. By that time, we may have solutions to the problems of being able to send a large enough ship to provide adequate living space, food, and radiation shielding for a long term trip.
