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.
Aside from the fact that the Moon, Earth and Sun don't orbit all in the same plane (as mentioned by Quora User's answer) there are two more reasons why the full moon can be seen during the day: 1  The full moon happens, as you correctly state, when the Sun, Earth and Moon are aligned.  That's no (full) moon!