Astronauts Suni Williams and Butch Wilmore have now been in space MONTHS longer than intended, residing at the International Space Station while NASA tries to figure out a way to get them home.

And now, NASA says they could be there until next year and they may have to call in Space X to help.

To answer those questions and more, KCBS Radio's Eric Thomas was joined by Dr. Scott Hubbard, Professor of Aeronautics and Astronautics at Stanford University & Former NASA Ames Director.

All this in a special segment of Ask an Expert--every day at 9:20AM.