Okay i am not a physics master. I'm in honors high school physics with a C. But physics is just so interesting. I just wish I was better at it. I'm always making stupid mistakes on tests Anyways. I am really interested in learning about the wierd things in physics. Like tachyons, string theory, shrodingers equation, what happens at the speed of light,EDIT: oh yeah cant forget wormholes, black holes, and superdense star material ,quantum tunnelling, relativity, redshifts, time travel (i know its not possible), and well you get the jist of it. I wanna know about all the cool things about physics. I was wondering if someone could point me towards a book that would be able to explain it so someone with my knowledge would understand it. I have allready read about half of The Physics of Superheros which is a great book, and want to learn more. My teacher says I don't have a high enough grade to go to AP so I have to learn this myself. I'd rather not have to spend countless hours on the net trying to find stuff (mainly cause my internet usage is limited). So any help would be greatly appreciated. Thanks in advance. PS: also why do people say light can't be slowed down but it travels slower through certain things?