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Earth Catches Mysterious Signals from Another Galaxy

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news-box-content-sub"> byBertha Avid Ayu SilviaeditorDenny Mahardy Jan 29, 2023

Technologue.idJakarta – For the first time, scientists have detected signals from other galaxies that are 9 billion light years from Earth.

The signal was captured by Giant Metrewavve Radio located in Pune, India.

Using state-of-the-art telescopes, scientists detect a unique radio signal at a unique wavelength known as the 21-centimeter line or the hydrogen line. This signal is emitted by neutral hydrogen atoms.

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Unfortunately this unique signal does not come from extraterrestrials, but is the emission from a galaxy called SDSSJ0826+5630, or star forming galaxy.

What’s interesting is that the signal was emitted when the Milky Way Galaxy (of which the Earth is part of the Milky Way Galaxy) was only 4.9 billion years old, while the Milky Way Galaxy is currently estimated to be 13.8 billion years old.

Therefore, it took 9 billion years for the signal to reach Earth. For scientists, the signal is one way to look back in time 9 billion years.

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Quoted from blog.physics-astronomy.com, there is another radio signal detected from a nearby galaxy, but this is the most distant signal detected so far.

Radio signals from SDSSJ0826+5630 allow scientists to measure the mass and gas content of the galaxy. Using this information, scientists determined that distant galaxies may have twice the mass of stars as seen from Earth.

#Earth #Galaxy #Planet

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