One immense problem is that the primordial fireball destroyed all the evidence; the temperature of the universe in the first seconds of its existence was many trillion degrees.

最大的难题是那初始的火球销毁了一切证据；在宇宙产生的最初几秒钟里，它的温度高达几万亿度。

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It was an ironic victory, though, for the killer evidence supporting the Big Bang was also an extra-galactic radio signal one left over from the primordial fireball itself.

ECONOMIST: Obituary

Further out into space, beyond 10 billion light-years, Subaru will be able to see the universe in its infancy not long after the primordial fireball cooled enough to become transparent.

ECONOMIST: Japan��s new telescope