The formation of micro black holes on Earth in particle accelerators have been tentatively reported, but not yet confirmed. So far there are no observed candidates for primordial black holes.

• 地球上的微型黑洞在粒子加速器中已经有试验性的报道,但是仍然没有确认。到目前为止还没有发现原始黑洞观察候选人出现。