Mariette Answers Your Questions! - Ask the Experts #5

The Editor-in-Chief of Scientific American, Mariette DiChristina, is here to answer your space questions! Will humans ever be able to build a space craft to take us to other planets in our universe? How is the Mars Rover controlled if it takes 20 minutes to receive a signal? What would happen if two black holes collided? Leave your questions in the comment section or ask it in a video response. Remember, the question with the most thumbs up will always be answered, no matter what! An expert will be back to answer 3 more of your questions. Thanks for watching! Learn More: 100 Year Starship: http://goo.gl/ATfxL NASA site all about the Mars Rovers: http://goo.gl/AVhCj Supermassive Black Holes: http://goo.gl/XA3I0 Watch more episodes of 'Ask the Expert': http://goo.gl/9MNo5 Check out Scientific American: http://www.scientificamerican.com Subscribe, future astronauts!    / spacelab