But the journey is long– the sun is 93 million miles (about 150 million kilometers) away– and we do not have the modern technology to safely obtain astronauts to the sunlight and back yet. As well as if we did, it ‚d be pretty hot. The sun’s surface area has to do with 6,000 Kelvin, which is 10,340 levels Fahrenheit (5,726 degrees Celsius).