暗物质究竟是什么目前还是一个谜。一种猜测是它是一些尚未被发现的基本粒子，约13亿年前宇宙大爆炸时产生的一些遗留物。
What exactly dark matter is remains unknown: the big bet is that it is some as-yet undiscovered elementary particle, some relic of the "big Bang" that created the Universe around 13 billion years ago.
弗里德曼方程派生自爱因斯坦的广义相对论。这两个方程式描述了整个宇宙的生命历程——由宇宙大爆炸时的暴烈到不断加速膨胀后的死寂。
Derived from Einstein's theory of General Relativity, the two Friedmann equations describe the life of the entire universe, from fiery Big Bang birth to chilly accelerated expansion death.
人们认为137亿年前在创造宇宙时所发生的大爆炸所产生物质和反物质是等量的，因此它们应该全部地彼此相互湮灭，所遗留下来的宇宙应该什么也没有。
The Big Bang that created the cosmos 13.7 billion years ago should have produced equal parts matter and antimatter, which would have annihilated, leaving the universe barren of either.
如果宇宙中的所有粒子都是无质量，那么宇宙对于他们就会是初始时那样无限小，并且无限小的宇宙会经历一次大爆炸。
If all particles in the universe were massless, then, the universe would look to them to be infinitely small. And an infinitely small universe is one that would undergo a Big Bang.
当宇宙最初从大爆炸中诞生时，整个世界基本上就是由氢和氦组成的。
When the universe emerged from the Big Bang, it consisted almost entirely of hydrogen and helium.
威尔逊和彭齐亚斯捕捉人造卫星上反弹回来的无线电波的天线时不经意地发现了宇宙微波背景辐射，而这正是宇宙大爆炸的物理性证据。
And Wilson and Penzias discovered the cosmic microwave background radiation, physical evidence for the Big Bang, while fiddling with an antenna designed to catch radio waves bouncing off satellites.
当它们碰撞时，它们释放的能量强大到物理学家们常常会将铅——铅对撞成为“微型宇宙大爆炸”。
When they collide, they release so much energy that physicists often refer to the lead-lead collisions as "micro-Big Bangs."
当宇宙在大爆炸中形成时，Markopoulou说，并不存在我们现在知道的空间这种东西。
When the universe formed in the big bang, Markopoulou says, there was no such thing as space as we know it.
一个名叫Georges lemaitre的比利时神父在二十世纪二十年代第一次提出了大爆炸理论，他当时认为宇宙诞生自一个原始原子。
A Belgian priest named Georges lemaitre first suggested the big bang theory in the 1920s when he theorized that the universe began from a single primordial atom.
一个名叫Georges lemaitre的比利时神父在二十世纪二十年代第一次提出了大爆炸理论，他当时认为宇宙诞生自一个原始原子。
Belgian priest named Georges lemaitre first suggested the big bang theory in the 1920s when he theorized that the universe began from a single primordial atom.
在这组数据中，物理学家们将找出在宇宙大爆炸后正好一秒钟时这一快速扩张期某些膨胀的痕迹！
In this data, physicists will seek out some signature of inflation, a period of rapid expansion just a fraction of a second after the Big Bang.
创造宇宙的大爆炸从第一时刻就充满了整个宇宙的体积。
The big bang which created the universe filled the entire volume of the universe from the first moment.
从宇宙大爆炸起到太阳系诞生，已经过去了大约2年时间。
Is born from the universe large explosion to solar system, had already passed for about 2 years.
也就是说从宇宙大爆炸起到太阳系诞生，已经过去了大约2年时间。
That is born from the universe large explosion to solar system, had already passed for about 2 years.
关于宇宙起源的大爆炸理论曾风行一时。
The big bang theory of the origin of the universe was once very popular.
在宇宙大爆炸之后大约30万年时，宇宙就像一个充满烟雾的房间，无法透出光亮。
About 300,000 years after the big bang, the universe was like a smoke-filled chamber from which light could not escape.
在宇宙大爆炸之后大约30万年时，宇宙就像一个充满烟雾的房间，无法透出光亮。
About 300,000 years after the big bang, the universe was like a smoke-filled chamber from which light could not escape.
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