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các nhà khoa học bắt được tín hiệu radio từ giải ngân hà cách Trái Đất 8,8 tỷ năm ánh sáng...

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Researchers from Montreal and India have detected a radio signal from a galaxy that's nearly nine billion light years away



According to their findings, the signal would have been emitted when the universe was just 4.9 billion years old – long before our own solar system was formed about 4.5 billion years ago.

..."A galaxy emits different kinds of radio signals," said Chakraborty, who studies cosmology in McGill's physics department. "Until now, it’s only been possible to capture this particular signal from a galaxy nearby, limiting our knowledge to those galaxies closer to Earth."

The distant star-forming galaxy is known as SDSSJ0826+5630. The signal also enabled researchers to determine that the atomic mass of the galaxy's hydrogen gas content is nearly double the mass of the stars that are visible to us.  

Tags: science

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