[69 / 18 / ?]
Quoted By: >>21137938 >>21137939 >>21137942 >>21137944 >>21137948 >>21137950 >>21137952 >>21137954 >>21137955 >>21137957 >>21137958 >>21137959 >>21137960 >>21137961 >>21137962 >>21137963 >>21137965 >>21137966 >>21137967 >>21137976 >>21137978 >>21137985 >>21137989 >>21137992 >>21137994 >>21137996 >>21138003
are black holes real?