It's time now for Ask An Expert, every weekday at 9:20 AM on KCBS we're giving you direct access to top experts in various fields.

SpaceX launched a Falcon 9 rocket into space carrying billionaire Jared Isaacman and three crewmates into orbit. There, they will carry out the first non-governmental spacewalk.

To answer those questions and more, KCBS Radio's Margie Shafer was joined by Eric Berger, Senior Space Editor at Ars Technica.