The speed of sound is approximately 343 meters per second (or roughly 1,235 kilometers per hour or 767 miles per hour) in Earth's atmosphere at sea level. However, it's important to note that sound requires a medium to propagate, such as air, so it cannot travel through the vacuum of space. Therefore, it is not possible to directly measure the time it would take to reach the Sun using the speed of sound.
The average distance from the Earth to the Sun is about 149.6 million kilometers (93 million miles). To calculate the time it would take to cover this distance at the speed of sound, we would divide the distance by the speed of sound. However, since sound cannot travel through space, the calculation is not applicable in this context.
To reach the Sun, spacecraft like NASA's Parker Solar Probe have to travel at incredibly high speeds to counteract the Sun's gravitational pull. The Parker Solar Probe, for instance, is expected to reach speeds of up to 430,000 miles per hour (700,000 kilometers per hour) during its closest approaches to the Sun. Even with such high speeds, it takes the Parker Solar Probe several years to reach its closest approach to the Sun.
In summary, while the speed of sound is a useful measure within Earth's atmosphere, it does not apply to travel in the vacuum of space, such as reaching the Sun. Spacecraft traveling to the Sun require significantly faster speeds and sophisticated propulsion systems to overcome the challenges of gravitational forces and immense distances.