Earth’s magnetic environment is filled with a symphony of sound that we cannot hear. All around our planet, ultralow-frequency waves compose a cacophonous operetta portraying the dramatic relationship between Earth and the Sun. Now, a new NASA-funded citizen science project called HARP – or Helio
Earth’s magnetosphere is a magnetic bubble that envelops and protects our planet from most of the charged particles that flow from our Sun. However, when solar particles strike the magnetosphere, they can cause magnetic field lines and plasma around Earth to vibrate like the plucked strings of a harp, producing ultralow-frequency waves. Credit: Martin Archer/Emmanuel Masongsong/NASA
Listen to the sounds of space and help learn more about the Sun-Earth relationship with NASA’s new HARP citizen science project. Credit: NASA/Beth Anthony “THEMIS can sample the whole harp,” Hartinger said, “and it’s been out there a long time, so it has collected a lot of data.” “The process of identifying new features through deep listening feels a bit like treasure hunting,” said Robert Alexander, a HARP team member from Auralab Technologies in Michigan. “I’m excited for individuals around the world to get a taste of this experience through the HARP project.”
An all-sky camera captured auroras pulsating and rippling through the skies over Canada on March 24, 2023. Comparing features in the auroras with observations from NASA’s THEMIS mission, scientists revealed that swirls and pulsating patterns in the aurora have a direct connection to plasma waves near Earth. Credit: University of Calgary
There’s an advantage to having a wide and diverse group of people listen to the sounds, the team says.
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