Sadly, I'd be lucky to be allowed to clean the floors at Nasa. You'd need a Ph.D or Masters, and even then its pretty stiff competition. I even broke down and tried applying for about 6 civilian military jobs. Signal Analysis, etc. Didn't get any of them. For one of the positions, 240 people applied....I did manage to make it into round 2/3 of the selections though.
I've searched Monster.com and Craigslist.com like mad, but find nothing, or no-one replies to me. Most of the jobs I don't even qualify for, because they want an engineer or 4+ years of experience, and the ones I do qualify for, I never hear back on. I havn't filtered by area at all...I'd go anywhere, I just want a real job.
If you want to be able to just start doing your own research, you pretty much need to get a Masters Degree or higher, yes. If you don't want to go that route, you'll need to find a way to get your foot in the door somewhere that would allow you to get into a job or career you'd like.
Internships are a good direction to go... in fact, on the NASA note, I met one of their recruiters at an experimental aircraft show a year or so back, and she mentioned a lot of internships for Bachelors-holders in a number of disciplines. Heck, I could get work there as a Biology Graduate, doing research on the effects of zero gravity on plant and animal development. I'd wager you could find relevant work as well. (EDIT:
Link 1,
Link 2)
Another alternative for you; while your knowledge and credits are fresh, go back and get a duel/triple major while you look for work. That way, you can keep deferring your student loans (you're still a student) and use the credits you have to net yourself another degree or two, while you wait for a snazzy job to pop up. A good friend of mine is doing that... he just went back to school to get a Bio degree while he waits to get into med school, after snagging one in Environmental Law/Policy and Pre-Medicine.