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Pinyin/Gamma-ray burst
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thumb|right|250px|Artist's illustration of a bright gamma-ray burst occurring in a star-forming region. Energy from the explosion is beamed into two narrow, oppositely-directed jets.
Gamma-ray bursts (GRBs) are flashes of gamma rays from extremely energetic explosions. They have been seen in distant galaxies. They are the most luminous electromagnetic waves known to occur in the universe.
Gamma shèxiàn bàofā (GRB) shì láizì jídà néngliàng bàozhà de gamma shèxiàn de shǎnguāng, láizì yáoyuǎn de xīngxì, shì yǐzhī fāshēng zài yǔzhòu zuì guāngliàng de diàncíbō.
Category:Pinyin/Astronomy