Why can't he fly? It only makes sense because of the lift he would get, especially at the speed of light.

And why wouldn't he transform into light instead? I mean he could go around the universe in a blink of the eye, or use it as a burst.

closed as off-topic by Buzz, Blackwood, Möoz, Ward, amflare Dec 20 '17 at 4:55

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    In the Tv show he cant moved the speed of light, hes in the low mach's still – Himarm Dec 1 '16 at 17:56
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    He wouldn't even need to reach the speed of light to get airborne - if he could reach escape velocity (MUCH slower than light) he would escape the Earth's gravitational pull and fly off into space. The thing is, he attains this fantastic speed by running, which requires boots on the ground. As soon as he jumps or otherwise loses contact with a surface to run on, he begins decelerating thanks to gravity (and wind resistance, etc.) To be sure, he can probably jump hella high (or hella far) but it's still not quite flying. – Steve-O Dec 1 '16 at 18:11
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    If he's able to achieve relativistic velocity then staying on the surface of Earth is the least of his problems. See what-if.xkcd.com/1 for what happens to a baseball at 0.9c. – Paul Johnson Dec 1 '16 at 21:45
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    he needs a pedal powered plane.the with appropriate gearing he must be able to achieve super sonic speeds. Similarly if he thought about it he could run a dynamo based power plant too. Superheros are so selfish sometimes. – DubMan Dec 2 '16 at 14:36
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    Hi, scientist here- why would approaching the speed of light transform you into light? Let me rephrase that- is there something in the comics or elsewhere which indicates that this is what occurs? – Broklynite Dec 27 '16 at 9:26