And these stars have compressed down to maybe something like 12, 15 miles wide, and they are black holes. And they are gobbling up everything around them, including light, which is why we can't see them.
20kmか25kmのサイズに 押し縮められたこれらの星が ブラックホールです 周囲の光を含めた あらゆる物を吸い込むため 目には見えません