Space is a silent place. Without air, there can be no sound, and the records of space agencies such as the POT on noisy events are rare. However, in 2006, scientists discovered the loudest sound ever recorded in the universe, called “space roar”.
Astronomers were surprised to find a very high radio signal with no determined origin, a mystery that remains unexplained. The signal was six times stronger than expected, according to a report posted on the website of wow.
The report adds that it is not a sound, but a radio signal. It was discovered by the Absolute Radiometer for Cosmology, Astrophysics and Diffuse Emission (ARCADE), a detector that NASA attached to a stratospheric balloon, which rose to 36,000 meters in order to look for signs of radius of distant galaxies.
With the ARCADE mission, the US space agency sought to detect faint radio signals from distant stars without the hindrance of Earth’s atmosphere. Instead, got the radio equivalent of turning on the TV with the volume all the way up.
What did the researchers say?
The researchers described the sound as a “boom,” six times louder than anyone had anticipated. After some study, scientists ruled out the idea that they were simply very noisy early stars.
Astronomers also ruled out that the “space roar” came from dust in our own galaxy. It was just about a radio burst that seemed to be part of the background noisefor no reason.
The roar, also called radio synchrotron background emission, is a diffuse signal that comes from all directions, so it is ruled out that it is caused by a single object. The signal also has a frequency spectrum, which is similar to the radio emission from the Milky Way.
Although the “space roar” arouses the interest of the scientific community, there is no explanation for it. Theories suggest that it comes from our galaxy or outside her, this last scenario is preferred by experts. Other speculation argues that it is extended residual radiation, coming from the annihilation of dark matter or produced by interstellar dust and gas.