Home News A radio signal was picked up 9 billion light-years away

A radio signal was picked up 9 billion light-years away

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Space.com said Friday that a record-breaking radio signal 9 billion light-years from Earth has been recorded.

The signal is detected by a single wavelength known as the “21 cm line” or “hydrogen line”, which is said to be emitted by neutral hydrogen atoms.

A signal picked up by India’s giant Meterwave radio telescope may mean scientists can start investigating. The report pointed to the formation of some of the oldest stars and galaxies.

The researchers detected the signal from a ‘star-forming galaxy’ called SDSSJ0826+5630, which emitted as the 13.8-billion-year-old Milky Way – the galaxy where Earth resides – was only 4.9 billion years old.

“It’s the view equivalent of a baccalaureate author and postdoctoral cosmologist at McGill University,” Arnab Chakraborty said in a statement released this week.

The signal means that scientists can track the formation of the largest stars and galaxies.
NASA, ESA, CSA, STScI, and Joseph DePasquale (STScI)

Galaxies are said to emit light over a wide range of radio wavelengths. But until recently, radio waves with a wavelength of 21 cm were only recorded in nearby galaxies.

“A galaxy emits different types of radio signals. Until now, it was only possible to pick up this specific signal from a nearby galaxy, which limits our knowledge of galaxies closest to Earth,” Chakraborty said.

The signal allowed astronomers to measure the gas content in the galaxy and thus find the galaxy’s mass.

The report says that this design led scientists to conclude that this distant galaxy is twice the mass of stars visible from Earth.

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