Starting at 3:30 PDT I'll be answering your questions about space, SETI, and how I've aided humanity's efforts to contact extraterrestrial life.
My grandson will be telling me the questions and typing the responses.
EDIT: The AMA is beginning now, I'll be answering questions for about 2 hours.
Update: The AMA is over now, I wanted to sincerely thank everyone who put in questions. Many questions didn't get answered, but I still appreciate those who asked them. The majority of those I didn't answer were covered in other replies; I may not have answered personally but I still made sure to read all of them.