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Since the current record for the highest laser intensity in the world, demonstrated by CoReLS, is still a million times below this threshold, the team employed a workaround: an ultra-relativistic electron beam collided with an ultrahigh intensity laser pulse, exploiting Einstein's theory of relativity.

Now that the spacecraft is outside the Sun’s protective bubble, its electronics are also vulnerable to strikes from galactic cosmic rays, charged particles accelerated to ultrahigh energies by supernovae and other cosmic engines.

"WGM resonators' ultrahigh sensitivity lets us detect single particles and ions, but the potential of this powerful technology has not been fully utilized because we can't use this ultrasensitive sensor directly to measure a complete unknown," Liao added.

This configuration allows EPs to be tuned solely through adjustments to the control unit, allowing for ultrahigh sensitivity without the need for complex modifications to the sensor.

"This will hopefully lead to future storage devices with ultrahigh information density and high reliability."