Welcome to my world, and welcome to Astronomy: Exploring Space and Time. This massive open online class in astronomy is all about the cutting edge of my subject. But before you start the course, we're hoping in my research group, that you'll take a short survey, should last only about ten minutes, that will tell us a little bit more about you and your motivations for taking this course. This helps us do research which improves offerings like this. The information, if we use it for research purposes, will never have your identity attached to it, and it will help us make better courses like this in the future. After that, you can go on and enjoy the course. Thanks very much.