You may want to put plans for building that flux capacitor on hold: a "toy" big bang created in the lab suggests time travel may not be possible after all.

也许你要把建造通量电容器的计划搁置下来：实验室下的大爆炸理论模型表明时间旅行也许根本不可能。

youdao

So Smolyaniov and Hung took the logical step of building a miniature simulation of the Big Bang in their lab.

FORBES: University of Maryland Researchers Build a Big Bang In Their Lab

Carol Hunter, who lives in a building that backs on to Lakanal House, described hearing a "huge bang and then flames were everywhere".

BBC: Probe into fatal tower block fire