Balloon Telescope Uncovers Hidden Magnetic Web Above the Quiet Sun

Scientists have discovered an intricate network of hidden magnetic threads above quiet regions of the Sun, using observations gathered by the Sunrise-III solar observatory during its 2024 stratospheric balloon flight, Mirage News reported. Led by the National Astronomical Observatory of Japan, researchers found that inactive areas of the solar surface are laced with complex magnetic structures that were previously difficult to observe from the ground.

The Balloon Observatory Flight in 2024

Sunrise-III carried a 1-meter telescope approximately 35 kilometers above Earth into the stratosphere during its 2024 mission, according to Science Daily. Ground-based telescopes routinely struggle to capture fine details in quiet solar regions because turbulence in Earth’s atmosphere blurs the view. By rising far above most of that atmospheric interference, the balloon-borne observatory obtained exceptionally sharp measurements of weak solar magnetic fields.

The observatory’s gondola carried three scientific instruments built with international contributions. Among them was the Sunrise Chromospheric Infrared spectroPolarimeter, known as SCIP, which was developed under the leadership of the Japanese observatory. SCIP continuously measured magnetic fields across multiple layers of the solar atmosphere, allowing researchers to track how magnetic structures extend from the photosphere into the chromosphere.

Magnetic Canopies and Thread-Like Features

Above quiet regions of the Sun, the telescope detected narrow, elongated magnetic structures woven into a broader network called the magnetic canopy. This canopy spans the chromosphere, the atmospheric layer located above the visible surface of the Sun. As magnetic fields concentrated in the photosphere spread outward and arch upward, they form this canopy, which observations show contains tight, thread-like features rather than a uniform, smooth expanse.

Researchers also examined a second quiet region located near the solar limb, which is the visible edge of the Sun. In that area, the telescope measured magnetic fields inside spicules, which are narrow jets of solar material shooting upward from the surface. Around Prague reported that these measurements tracked how the distribution of magnetic fields shifts with increasing height above the solar edge.

Computer Simulations of Surface Motions

To understand how these elaborate structures form, scientists ran computer simulations that successfully replicated the patterns recorded by Sunrise-III. The results point to movements on the solar surface as the driving force behind the features. As solar surface motions twist magnetic field lines, they create the intricate threads observed higher up in the atmosphere.

Energy Transfer in the Solar Atmosphere

The findings provide new clues regarding how energy travels upward through the solar atmosphere and contributes to atmospheric heating. Scientists note that understanding these complex magnetic networks offers an important step toward explaining how magnetic activity heats the outer layers of the Sun, even in zones that look calm from afar. Further observations will be needed to confirm the exact contribution of these magnetic threads to overall solar heating.