Flexi Says: Sun is around 93 million miles away from the Earth. It requires 55 times more energy to reach the sun than the mars because Earth is moving at a speed of 67,000 miles per hour, which is the sideways motion relative to the Sun. To reach the sun, we need to overcome this sideways motion. The only way to get to the Sun is to cancel that sideways motion. It is Parker Solar Probe sent by NASA has the capacity to reach nearest to the sun which is 3.8 million miles.