The Sunrise III balloon observatory has captured unprecedented details of solar flares and magnetic fields, giving scientists a clearer view of the sun's turbulent atmosphere. The mission, flown in July 2024, gathered over 200 terabytes of data during its six-and-a-half-day flight. This data provides insights into a 2,000-kilometer-thick layer of the sun, including its visible surface and the adjacent chromosphere.Researchers from an international team, led by Germany's Max Planck Institute for Solar System Research, published the first results in July 2026.[eurekalert+5]
Unveiling Solar Secrets
Sunrise III operated at an altitude of about 35 kilometers in the Earth's stratosphere. This high perch allowed it to bypass atmospheric distortions that affect ground-based telescopes.The observatory launched from northern Sweden and drifted to Canada's Northwest Territories, enabling continuous observation of the sun.Its one-meter telescope achieved a remarkable resolution, capturing features as small as 50 kilometers on the sun's surface, despite being 150 million kilometers away.[eurekalert+8]
The telescope focused on the photosphere, the sun's visible surface, and the chromosphere, the layer just above it.This region is crucial for understanding the complex interplay of hot plasma, magnetic fields, and waves that drive the sun's powerful outbursts.The mission's success builds on previous Sunrise flights in 2009 and 2013, which also provided valuable solar data.[eurekalert+7]
Tracking Flares and Magnetic Fields
During its flight, Sunrise III observed an M5.3-class solar flare on July 13, 2024.This type of flare is the second strongest category and can cause moderate disruptions on Earth, impacting power grids and satellite systems.The TuMag instrument on board provided detailed information about the strength and structure of magnetic fields during this eruption.Scientists saw brightly flashing structures in the chromosphere, which form when magnetic field lines rearrange and release energy.[eurekalert+11]
The data offers precise insights into the fine structure and changes in these magnetic fields.This helps researchers understand how small-scale processes in the chromosphere regulate the evolution of large solar flares.Sunrise III also detected what scientists call "solar tornados," which are finely twisted magnetic field lines controlling plasma flows in the chromosphere.These observations challenge previous ideas about the orderly structure of magnetic fields in these regions.[eurekalert+7]
Advanced Observation Capabilities
Sunrise III carried three new instruments: SUSI, TuMag, and SCIP.These instruments allowed the observatory to collect spectropolarimetric data simultaneously across near-ultraviolet, visible, and infrared light bands.Access to ultraviolet light is especially important because Earth's ozone layer blocks most of this radiation from reaching ground-based telescopes.This multi-wavelength capability provides a more complete, three-dimensional picture of the solar atmosphere.[currentdeck+6]
Dr. David Orozco Suárez, a principal investigator for the project in Spain, highlighted the mission's unique ability. He stated that Sunrise III is "the first observatory to obtain spectropolarimetric data simultaneously in the near-ultraviolet, visible, and infrared light bands, with unprecedented spatial and temporal resolution." The mission also tracked acoustic waves traveling through the sun's lower atmosphere, showing how magnetic fields affect these waves over a 2,000-kilometer range.[iac+1]
Andreas Korpi-Lagg, Sunrise III project manager, noted the vast potential of the collected data. "We're still just at the very beginning," Korpi-Lagg said. "The data from the Sunrise III mission will keep us busy for many years to come - and will certainly hold a surprise or two." Sami K. Solanki, head of the Sunrise III project at the Max Planck Institute for Solar System Research, added that the mission enhanced knowledge by revealing how minute structures and rapid processes shape the Sun's behavior.[eurekalert]
Looking Ahead
The detailed observations from Sunrise III are crucial for advancing our understanding of the sun's magnetic activity. This activity drives phenomena like solar flares and coronal mass ejections, which can create "space weather" that affects Earth. A deeper understanding of how magnetic fields change before and during solar eruptions could eventually improve predictions of these potentially disruptive events. The data will also help scientists explore how turbulence within the sun generates waves that propagate through its atmosphere.[mps+2]
The Max Planck Institute for Solar System Research leads the Sunrise III mission, collaborating with institutions like the Johns Hopkins Applied Physics Laboratory, a Spanish consortium, the National Astronomical Observatory of Japan, and the Leibniz Institute for Solar Physics. The wealth of data from this mission will inform solar physics research for years, helping unlock more mysteries about our star.[eurekalert+3]
