Tim07

Hi everyone. After watching/listening/reading popular science materials, some questions arise. So I'm planning to ask physics related questions here. I don't want to create new thread every time, because some of them don't deserve separate thread. 1. Which layout (?) of star-planet system on image is closer to reality? 1)All bodies in the Universe lay at one angle. 2)Bodies in galaxy lay on same angle as galaxy. Or they all lay at different angles? 2. Molecules have wave/particle duality as light does. I heard that: "The best way to think about light is that it is travels as wave, arrives as particle". Can you say the same about molecules? 3. Not physics question, but anyway. How much time do you need to count to 10 to the power of 100 (googol) on computer with performance 1 petaflops? As I understand this, you get ~ 10 to the power of 15 each second. Year has ~ 3*10 to the power of 7 seconds. So you'll need ~ 3*10 to the power of 77 years. Is that right?