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.
Itâs because Mercury rules communication, clear thinking, truth and travel, so when the planet goes retrograde â which means that it looks like itâs going backwards in the sky â all those things go backwards. They start to get ugly and tangle up.