If Photons Have Zero Mass, How Can Black Holes Pull Them In? [Video]
New York University research scientist Gabe Perez-Giz answers viewer questions submitted to our YouTube Spacelab Channel
By Eric R. Olson
Questions answered in this episode:
"What is preventing light from going faster than 300 000 km/s?"-mmbn6fan
"If photon has rest mass = 0 , then why does black hole pull it in?" - Karan Karnik
"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? :-)" - Robert Kongshaug
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