1. Was the Deep Impact project worth the cost?Well, if we ever are threatened by a "deep impact" (the movie) type scenario- this goes a very long way into understanding how to keep that from happening- we have to know what something is made of before we can blow it up, right?
Eventually, we will turn to mining space, and this is one of those steps as well, so I consider it a long term investment. There are of course, the unintended spin offs in technology we don't know about now- like Velcro or miniturization were from the space race.
I am a hard sci-fi buff, and an avid science amatuer, and hope my kids will be astronauts or cosmonauts some day.
Americans are seriously behind in the production of domestic created engineers- and space is a glamour industry for engineers- you know "hey, I am a rocket scientist" LOL- and this is definately the kind of stuff that encouraged kids to go into engineering- NOT designing a wastewater treatment plant in Hoboken!
There is a saying among science-space engineers- "To get to Mars, we need American money and Russian brains"- kind of sad that our country is just not turning out the engineers in droves like India or Russia.
2. Should NASA concentrate on projects such as Deep Impact -- "low cost" scientific missions using automated spacecraft -- or on human space flight? Both? Neither? Something else?Actually, I think it is ingenious- though, I think they have tempered it too far- you need a "big W" every once in a while, a big program to work towards, a big goal to complete- possibly one of the only two things I have ever agreed with GW- the Mars landing and restarting War bonds. Those automated small missions are great- we get so much more "bang for the buck"- we find out some very basic scientific questions and close some theories, which will be very important if we want to , or even worse NEED to have a major space mission. The small mars missions are definately totally neccesary if we ever want to have a mars landing.