Helium-3 has one less neutron than regular helium (helium-4) and is also produced in the sun and almost as quickly consumed in fusion reactions as deuterium.

氦- 3比普通氦(氦- 4)少一个中子，并且同样在太阳里产生然后象氘一样在核聚变中迅速被消耗掉。

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The most likely explanation for GRB050709 is that it was produced by a collision of two neutron stars, or a neutron star and a black hole.

对于GRB050709，最可能的解释认为，它是两颗中子星，或者一颗中子星和一个黑洞碰撞的结果。

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The image also contains several mysteriousX-ray filaments, some of which may be huge magnetic structuresinteracting with streams of energetic electrons produced by rapidlyspinning neutron stars.

这幅图像中还包含了几个神秘的X-射线片断，它们中的一些可能是因为巨大的磁场结构和强电子流相互作用而产生了快速旋转的中子星。

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They are produced by supernovae, neutron stars, galactic centres, black holes and the like.

ECONOMIST: A new gamma-ray telescope has just been launched

Strong gravitational waves are thought to be produced by the collision of two neutron stars.

ECONOMIST: Fundamental physics

The device's primary source of neutron radiation was the radioactive element californium, but the stream of neutrons produced by the californium was multiplied by passing it through a lattice of highly enriched uranium U-235, whose nuclear fission released additional neutrons.

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