To know what's inside a black hole, we need something to come out from behind the event horizon, and reach us via a telescope.

要知道黑洞里究竟是什么，我们需要有什么东西从视界里出来，并让我们用望远镜看到。

youdao

To know what's inside a black hole, we need something to come out from behind the event horizon, and reach us via a telescope.

要知道黑洞里究竟是什么，我们需要有什么东西从视界里出来，并让我们用望远镜看到。

youdao