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Outer space is a vast mystery to us tiny humans here on earth. But every once in a while, we get a glimpse of what it’s really like out there. This list is full of creepy space noises that have been recorded over the past several decades. Most of them are naturally-occurring phenomena produced by atmospheric changes or changes in electromagnetic fields, but some of them have yet to be explained – and yes, it is possible that some of them come from extraterrestrial intelligent life.

These spooky space sounds just might be the key to communicating with whomever might be out there beyond our solar system…

 

Radio Emissions from Saturn
Video: YouTube

NASA’s Cassini spacecraft began detecting radio emissions from Saturn in 2002, when the craft was first approaching the planet. According to NASA, these radio waves come from Saturn’s poles, and are linked to Saturn’s aurora – the same phenomenon as the aurora borealis here on earth. The sounds in the video have been sped up and adjusted so that they are within the frequency of human hearing.

“Outer Space Music” from the Far Side of the Moon
Video: YouTube

In 2016, NASA released to the public the sounds that Apollo 10 astronauts heard while on the far side of the moon over four decades ago. The astronauts would have been out of radio contact with Earth on the far side of the moon, leading some (including astronaut Al Worden) to believe that these sounds came from an extraterrestrial source. NASA, however, has dismissed the noises as radio interference between the lunar module and the command module of the mission.

The Heartbeat of a Black Hole
Video: YouTube

Binary star system GRS 1915-105 consists of a black hole and a star that constantly feeds it. An MIT professor took X-ray data from the black hole and translated it into sound. Sped up, the track becomes an eerie, heartbeat-like pattern, which is the sound of the black hole repeatedly spewing out matter.

A Singing Comet
Video: YouTube

The European Space Agency’s Rosetta spacecraft recorded a strange “song” from a comet in 2014. Scientists think the sounds were produced by oscillations in the comet’s magnetic field. The audio has been adjusted to bring the sounds within the range of human hearing.

Shrieking Solar Shockwaves
Video: YouTube

In 2013, the Voyager 1, the first spacecraft to go beyond our solar system, captured the first recorded sounds of interstellar space. The shrieking sound it recorded is caused by the vibration of plasma, or ionized gas. Plasma density increases with distance from the sun, and higher density increases the pitch of the sound.

The Sound of Jupiter’s Lightning
Video: YouTube

Jupiter emits sounds called “Jovian whistlers,” produced by the planet’s violent lightning strikes. They were first recorded by the Voyager 1 in 1979.

Star Smoke Signals
Photo: WikiImages/Pixabay/CC0 1.0

Jon Jenkins, a scientist and member of the Kepler mission, translated data from the Kepler spacecraft into an audio recording of a pulsating star. The intensity of the pulsation changes over time, and why that happens is a complete mystery. Jenkins posits there could be an alien civilization so advanced that it can actually control the waves given off by its own star.

Mysterious Cosmic Bursts
Video: YouTube

Telescopes in Australia and Puerto Rico have picked up strange bursts of radio waves from outside the Milky Way. Scientists are not exactly sure what is causing the sounds, but potential suspects include evaporating black holes, merging neutron stars, or flares from neutron stars with powerful magnetic fields. Of course, more adventurous theories include alien communications…

Possible Alien Sounds Recorded by a Balloon
Video: YouTube

In 2014, a UNC graduate student floated a high-altitude balloon equipped with infrasound microphones about 22 miles above Earth. The microphones picked up mysterious noises, which some speculate are alien communications. NASA, however, says the noise could have come from something as simple – and disappointing – as crashing waves or air turbulence.

The Sound of the Sun
Video: YouTube

When material moves from inside the sun to its surface, it generates sound. Scientists use this sound to study what’s happening on the sun. They have to speed it up and change its frequency in order for it to be audible to humans, however.

 

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