当脉冲量旋转时,辐射束扫过天空,就像灯塔的光束绕地平面扫视那样。
As the pulsar rotates, this beam sweeps the sky in the same way that a lighthouse beam sweeps around the horizon.
2006年12月13日,当一次太阳耀斑向地球发射了一束粒子和辐射流时,它为我们提供了一条重要的线索。
On Dec 13, 2006, the sun itself provided a crucial clue, when a solar flare sent a stream of particles and radiation toward Earth.
工作原理:一个两米长的天线和移动发电器制造95束千兆赫(3毫米)的辐射对准目标。
How it works: a 2-metre antenna and mobile generator produce and aim a beam of 95-gigahertz (3-millimetre) radiation.
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