All the matter, space, and the time there ever has been or ever will be popped into existence 10 to 20 bllion years ago.
This tiny, supercompressed point一a "singularity" in the jargon of physicists一was unimaginably hot and packed with energy. It burst forth in a titanic explosion and, expanding and changing ever since, it has become the universe that we一 and who knows who else? 一 call home? If some cosmologists are right, it's the only universe there ever has been, but there's no way of knowing for sure.
不论现已存在或将来要存在的物质、空间和时间都是在一百至二百亿年前“嘭”的一声间突然出现的。
这颗高度压缩的小点，用物理学家的行话来说叫做“奇点”。无法想象它有多热，里边的能量有多大。它在一声巨响之下爆裂开来，并从此不断扩展变化。这就是我们(谁知道除了我们人类以外(在宇宙中)还有什么别的生物)称之为家的宇宙吗?如果某些字宙论者是正确的话，这便是唯一(存 在过)的宇面)不过无法确知。
