Pretty much the title. DS has been exposed to plenty of Michio Kaku and watched lots of television specials on the topic, but his questions are getting way beyond me. His science and math understanding are advanced, but he's a very average reader for his age, and his reading speed is slower than average. I, myself, have read some of Stephen Hawking's work, but there's a lot of words to get through. He has really unusual questions, like about plasma as a dimension of itself. He's also looking at how if gravity works by bending space fabric with the mass of a large object and the other smaller objects then falling into orbit around it (like if you threw a basket ball in a gym parachute and then tossed in marbles from the edges), then could a sufficiently large object catapulted out of place actually tear the fabric of space. And he's looking for numerical or practical physics answers, not "the rule is" or "common sense" type answers. Point is, not things he'll find in the school library but I need not too wordy or some sort of audio version.
Any help would be appreciated! Thanks.