Some reports of ball lightning even involve multiple eyewitnesses who saw the same phenomenon from different angles and saw the balls travel in the same directions.

其次，有些目击者报告的那些球状闪电包含了近距离观察，有的详细介绍了球的内部结构，而且甚至还关联着气味和声响。

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Mysterious floating blobs of light known as ball lightning might simply be hallucinations caused by overstimulated brains, a new study suggests.

一项新的研究表明，称为球状闪电的、神秘光的浮动斑点，也许只是大脑简单地受到了过度刺激所产生的幻觉。

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"While hallucinations could explain some cases, the effect of ball lightning is yet feasible in both nature and the laboratory," Jerby said in an email.

他也不相信幻觉能对所有的球状闪电可以做出解释。“虽然幻觉可以解释某些情况，可是球状闪电仍然在自然界和实验室里是可以实现的”，丘比在一封电子信件中说。

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This one, however, unifies an awful lot of the properties of ball lightning under one theoretical umbrella, so I think it stands a very good chance of perhaps being correct.

BBC: New lead for fireball riddle

The new work by Messrs Jerby, Dikhtyar, Mitchell and their colleagues is not proof that natural ball-lightning consists of silicon nanoparticles.

ECONOMIST: Ball lightning

Ball lightning occurs so rarely that few photographs of it exist and researchers have had to rely on eyewitness accounts, some of them from previous centuries.

BBC: Ball lightning baffles scientists