I want to thank the Simons Foundation for supporting all of our initiatives here where we do private events, events that are science themed or science inspired and its really with the support that we are able to using these events, were excited to shout at simon. I want to mention before i do this, our guest is an amateur astronomer, he will be out in the cold gardens, applaud a lot louder. Hes out in the cold garden tonight and helping us and the claim is that the cloud sphere, is right about exactly as we sent it in the last question and also we will have a book signing for the glass universe so we will have signing over here and we will do a little q a after our conversation so let me introduce our guest. Im sure a lot of you have heard of our guests so i want to introduce david sobel. David sobel is a bestselling author, a superb writer. I remember when i heard you speak about your longitude, you said i think it was her son, asked you what you are working on and he started, i didnt
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