Questions answered in this episode:

"Is there a maximum size for a black hole?" - Oliver Baker

"Can matter exist without space?" - XENOpz6

"If we were able to overcome the problem of infinite energy for light travel and travel through space at the speed of light, would time dilation mean that from our perspective traveling anywhere would be instantaneous? And would this then mean that we would actually exist at every point in our vector at the same time?" - Andrew Martens

Submit your questions for the next round of Ask the Experts by clicking here and posting in the YouTube comments (Google account required). And while you're there be sure to subscribe to our Spacelab channel for weekly videos on space and astronomy. 

The question with the most "likes" will be answered in the next video by a new guest expert. Previous episodes have featured astronomer Caleb Scharf, astrophysicist Neil deGrasse Tyson and Scientific American's own editor in chief, Mariette DiChristina.