What is it like to fall into a black hole?

• The Galactic Center is the center of the Milky Way and the brightest region in the entire Milky Way, accounting for about 15% of the brightness of the Milky Way. It is located in the constellations of Sagittarius, Ophiuchus and Scorpius. It is about 24,000-28,400 light-years away from the Earth. At its center is a supermassive black hole with a mass of about 4.3 million times that of the sun.

• Many people may wonder why there is light at the center of the Milky Way when there is clearly a black hole? First of all, although black holes do not emit light, their strong gravitational pull makes the surrounding area glow. In addition, there is a dense cluster of stars at the center of the Milky Way that can emit a lot of light. It’s a pity that human eyes cannot see it, not only because of the distance, but also because the light emitted by the Milky Way is not only visible light.

• As of 2018, a total of 30 people have died heroically in the exploration of space, including 11 who died during training or testing, 1 who died in an accident below the Karman line, the boundary between the Earth's atmosphere and outer space, and 18 who died during flight missions. The three people who died on the former Soviet Union's Soyuz 11 died of decompression 146 kilometers from the Earth, which is the farthest accident that has ever occurred.