Earphone definition, a sound receiver that fits in or over the ear, as of a radio or telephone. See more.
Answer Wiki. If a rocket went straight up, it would either continue in that direction and leave Earth, or it would fall back down, depending on its velocity. Most rockets intend to enter orbit, which is an elliptical trajectory, and it's much more efficient to arc into this trajectory than to go straight up and then accelerate laterally.
So when you look straight up, the light passes through enough of the atmosphere, that you see mostly blue. But on the horizon, there is a lot more of the atmosphere, so blue scatters a LOT more and is then mostly lost. The reds and yellow pass straight through, and that is what you see.