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Gabe Perez-Giz, research scientist at New York University's Center for Cosmology & Particle Physics, answers your questions!
1. What is preventing light from going faster than 300 000 km/s?
2.If photon has rest mass = 0 , then why does black hole pull it in?
3. When black holes absorb matter, the matter's velocity accelerates into the black hole because of stronger and stronger gravity. But how about light? The speed of light is the limit, so what happens then? :-)
Find out more about Gabe: http://goo.gl/yYSCa
WATCH Gabe's lecture on black holes at New York University: http://goo.gl/garz2
Leave your questions in the comment section or ask it in a video response. An expert will be back to answer 3 more of your questions. Thanks for watching!