/sci/ - Science & Math

Currently 24, and will turn 25 later this year.
My question is: Do you think it's too late for me to learn any of this science and math stuff to actually pursue any of it as a fundamental career later in life? I 'graduated' with a GED at the age of 17, and have essentially sat on my thumbs doing nothing the entire time. Is it too late for me to go to college and strive to become something or someone that has the potential of working at NASA someday (perhaps something related to an Astronomer/Astrophysicist)? The biggest problem/fear that has plagued me is that I haven't 'figured out' what exactly I want to do with my life, but I've always found myself fascinated with space, and I've considered just going off of that. Are there any books you might recommend me reading or looking into that might set me in the right direction?