Strange FM signal discovered from one of Jupiter’s moons

NASA recently extended the life of two of its planetary discovery missions, including the Juno mission to Jupiter. Now it has come to light Juno has discovered an FM signal emanating from one of the host giant’s moons, Ganymede.

The discovery is not an indication of extraterrestrial life, but it is nevertheless fascinating, as it is the first time it has come from the celestial satellite.

“This is not ET,” Patrick Wiggins, one of NASA’s ambassadors to Utah, said in comments received by Fox 8 Cleveland. “It’s more of a natural feature.”

Natural color view of Ganymede from the Galileo spacecraft during the first encounter with the satellite. North is at the top of the picture and the sun illuminates the surface from the right. The dark areas are the older, heavier cratered regions and the light areas are younger, tectonically deformed regions. (NASA / JPL)

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The spacecraft, launched in 2011, accidentally traveled over Jupiter’s polar region at a speed of 111,847 km / h as it passed over the radio source, known as a ‘decametric radio emission’, or simply Wi- Fi. The radio broadcast lasted only five seconds, but there was enough time to confirm the source.

According to NASA, the decametric radio waves have frequencies between 10 and 40 MHz, but never above 40 MHz. “Electrons spinning in Jupiter’s magnetic field are thought to be the cause of the radio noise we hear,” the space agency added.

Scientists have known about radio waves on Jupiter since the mid-1950s, but this is the first time the phenomenon has ever originated in Ganymede.

The findings were recently published in the scientific journal Geophysical Research Letters.

While noteworthy, this is not the first time scientists have discovered strange events on Ganymede. In 2018, researchers observed ‘extraordinary’ electromagnetic waves, also known as ‘choral waves’, thanks to the spacecraft Galileo Probe.

Jupiter’s moon Ganymede has long fascinated astronomers – as it is the largest of the planet’s moons. In 2015, NASA’s Hubble Space Telescope spotted evidence that Ganymede had an underground ocean.

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Juno made a number of discoveries about Jupiter, including the recording of remarkable, never-before-seen images, as well as a ‘snow-white’ oval storm.

The Juno mission launched in 2011 would cease to function in July 2021, but will continue until September 2025 or the end of its life, whichever comes first. Juno will not only continue to observe the gas giant, but also to the planet’s rings and its moons, including ‘close flybys’ of Ganymede, Europa and Io.