What if we travel to the sun?

The sun is a yellow dwarf star and a hot ball of incandescent gases. Its gravity contributes to the carrying of the solar system. It retains all planets, large or small, in its orbit, and the electric currents generated in the sun create a magnetic field. Through the solar system through the solar wind, a stream of electrically charged gas that spews out from the sun in all directions, the contact and interaction between the sun and the earth lead to the formation of seasons, the movement of ocean currents, weather, and climate, radiation belts and twilight, although the importance of the sun to the core, but there are billions of stars such scattered across the Milky Way galaxy sun.

The sun does not really have a surface. From 93 million kilometers, it seems to have a surface. But what seems to be a surface is a transition region where it passes from a relatively transparent gas to an opaque gas. This transition region has a depth of several thousand kilometers and looks like the surface of a boiling pot - a turbulent irregular plan with huge splashing.

To land on the "surface" of the sun, which has a temperature of about 5778 K, the distance is about 8 minutes at the speed of light. 
We would need equipment that does not melt at ridiculously high temperatures. Even the diamond melts at about 3800 K, and I do not know of any material with a higher melting point. So, we cannot reach the sun intact. However, we would be able to hit it with particles that our probe, now vaporized, once understood. All we need to do is a series of gravitational aids to reduce perihelion to the surface of the Sun.

The Parker Solar Probe is going to be the first element of human engineering to be so close to the sun. He is actually going to touch the solar corona.

What is the solar corona?

The corona is the outermost and most vaporous part of the sun's atmosphere. Oddly enough, unlike the Earth where the temperature of the atmosphere decreases with altitude (at least until reaching the exosphere), the crown is by far the hottest part of the sun. The surface is around 6000 ° C, while the corona can exceed 1 million ° C.