01. Can a star be moving faster than what Doppler effect calculations indicate? This was a discussion question I heard but I'm not sure I understand. Can anyone provide any sort of information about this? 02. Can someone explain this to me, too? "Hydrogen red line is shifted, but other observations make the star appear to be at rest". It's described as an anamoly, but I don't get it. Even just seeing links somewhere on the internet would be helpful if you can provide them. I want to understand the concepts behind these questions. Thanks in advance! I'm sorry if this is the wrong forum to be putting this thread in. These are more theory questions, so I thought it more appropriate to put them here than in the homework help.