justelite writes: "A decade-long mystery has been solved using data from ESA's X-ray observatory XMM-Newton. The brightest member of the so-called 'magnificent seven' has been found to pulsate with a period of seven seconds.
The discovery casts some doubt on the recent interpretation that this object is a highly exotic celestial object known as a quark star."
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The Tao is like a stack:
the data changes but not the structure.
the more you use it, the deeper it becomes;
the more you talk of it, the less you understand.