Dr. Julia Kregenow is an Associate Teaching Professor at the Department of Astronomy & Astrophysics at Penn State University. She has authored several books including A Student's Guide to the Mathematics of Astronomy, ABCs of Space, and Astrophysics for Babies. Issues discussed include:  -How does propulsion and fuel work in space? 

-Why is the speed of light constant?

-Can we move faster than the speed of light? 

-Directionality in space 

-How does gravity work for Jupiter and moons around planets? 

-What are the effects of dark energy and dark matter in space? 

-Space rumours: is there another sun in our solar system? is there a planet number 9? is there a planet Vulcan?