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By European Space Agency
The European Space Agency’s Plato spacecraft has safely arrived at ESTEC, ESA’s technical heart in the Netherlands. There, engineers will complete the spacecraft by connecting its solar panels and sunshield, and carry out a series of critical tests to confirm that Plato is fit for launch and ready for its planet-hunting mission in space.
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By European Space Agency
Estonia marked its 10th anniversary in the European Space Agency alongside the plenary session of the European Interparliamentary Space Conference on 4 September.
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By NASA
This competition provides a hands-on opportunity for participants to gain critical skills in engineering, computing, electronics, and more that will be required for America’s technical workforce. If you are in sixth to 12th-grade at a U.S. public, private, or charter school – including those in U.S. territories – your challenge is to team up with your schoolmates and develop a science or technology experiment idea for one of the following NASA TechRise flight vehicles:
Suborbital-Spaceship with approximately 3 minutes of microgravity. High-Altitude Balloon with approximately 4 to 8 hours of flight time at 70,000 to 95,000 feet and exposure to Earth’s atmosphere, high-altitude radiation, and perspective views of our planet. Award: $1,500 each to 60 winning teams
Open Date: September 4, 2025
Close Date: November 3, 2025
For more information, visit: https://www.futureengineers.org/nasatechrise
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By NASA
Explore This Section Overview Science Science Findings Juno’s Orbits Spacecraft People Stories Multimedia JunoCam Images Jupiter hosts the brightest and most spectacular auroras in the Solar System. Near its poles, these shimmering lights offer a glimpse into how the planet interacts with the solar wind and moons swept by Jupiter’s magnetic field. Unlike Earth’s northern lights, the largest moons of Jupiter create their own auroral signatures in the planet’s atmosphere — a phenomenon that Earth’s Moon does not produce. These moon-induced auroras, known as “satellite footprints,” reveal how each moon interacts with its local space environment.
Juno capturing the marks on Jupiter of all four Galilean moons. The auroras related to each are labeled Io, Eur (for Europa), Gan (for Ganymede), and Cal (for Callisto). NASA/JPL-Caltech/SwRI/UVS team/MSSS/Gill/Jónsson/Perry/Hue/Rabia Before NASA’s Juno mission, three of Jupiter’s four largest moons, known as Galilean moons — Io, Europa, and Ganymede — were shown to produce these distinct auroral signatures. But Callisto, the most distant of the Galilean moons, remained a mystery. Despite multiple attempts using NASA’s Hubble Space Telescope, Callisto’s footprint had proven elusive, both because it is faint and because it most often lies atop the brighter main auroral oval, the region where auroras are displayed.
NASA’s Juno mission, orbiting Jupiter since 2016, offers unprecedented close-up views of these polar light shows. But to image Callisto’s footprint, the main auroral oval needs to move aside while the polar region is being imaged. And to bring to bear Juno’s arsenal of instruments studying fields and particles, the spacecraft’s trajectory must carry it across the magnetic field line linking Callisto and Jupiter.
These two events serendipitously occurred during Juno’s 22nd orbit of the giant planet, in September 2019, revealing Callisto’s auroral footprint and providing a sample of the particle population, electromagnetic waves, and magnetic fields associated with the interaction.
Jupiter’s magnetic field extends far beyond its major moons, carving out a vast region (magnetosphere) enveloped by, and buffeted by, the solar wind streaming from our Sun. Just as solar storms on Earth push the northern lights to more southern latitudes, Jupiter’s auroras are also affected by our Sun’s activity. In September 2019, a massive, high-density solar stream buffeted Jupiter’s magnetosphere, briefly revealing — as the auroral oval moved toward Jupiter’s equator — a faint but distinct signature associated with Callisto. This discovery finally confirms that all four Galilean moons leave their mark on Jupiter’s atmosphere, and that Callisto’s footprints are sustained much like those of its siblings, completing the family portrait of the Galilean moon auroral signatures.
An international team of scientists led by Jonas Rabia of the Institut de Recherche en Astrophysique et Planétologie (IRAP), CNRS, CNES, in Toulouse, France, published their paper on the discovery, “In situ and remote observations of the ultraviolet footprint of the moon Callisto by the Juno spacecraft,” in the journal Nature Communications on Sept. 1, 2025.
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Last Updated Sep 02, 2025 Related Terms
Auroras Callisto Juno Jupiter Jupiter Moons Keep Exploring Discover More Topics From NASA
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By NASA
4 Min Read Washington State Student Wins 2025 NASA Art Contest
“My Wonders with You” by Dahyun Jung, 2025 NASA Student Art Contest grand prize winner Credits: NASA/Dahyun Jung A Washington state high school student with a passion for art, space exploration, and a curiosity about the possibility of life on other planets earned the grand prize for the 2025 NASA Student Art Contest.
Dahyun Jung’s winning piece, titled “My Wonders with You,” shows a child seated on the roof of a barn, their arm draped around a dog, watching a space shuttle blast off in the distance. The two are joined by three extraterrestrial beings that also watch in awe. Jung was a high school senior during the submission period for the 2025 competition, which was December 1 through December 31, 2024. The theme for the 2025 art contest was “Our Wonder Changes the World.”
“My Wonders with You” by Dahyun Jung, 2025 NASA Student Art Contest grand prize winner
Credit: NASA/Dahyun JungNASA/Dahyun Jung “The theme immediately sparked memories of the moment I first saw a NASA spacecraft launch into space,” Jung said. “That experience filled me with awe and endless questions—especially about how aliens might view our efforts to explore the cosmos. I began imagining what future space missions might look like if we ever made contact with extraterrestrial life. That was the moment everything clicked—the exact moment when imaginations started to fill up the tiny world in my head. I knew exactly what I wanted to draw!”
Jung said art and crafting have been a special part of her life since childhood. She enjoys using a variety of materials to create everything from drawings and paintings to keychains and crochet dolls.
“I’ve always loved drawing, but it was in middle school that I really began to delve into it more deeply,” Jung said. “I see everything that passes through my hands as a form of art.”
I see everything that passes through my hands as a form of art.
Dahyun Jung
2025 NASA Student Art Contest grand prize winner
“A Marsbulous Future” by Chloe Ji, 2025 NASA Student Art Contest First Place Winner, 1st Grade Division
Credit: NASA/Chloe JiNASA/Chloe Ji Jung was one of more than 2,300 kindergarten through 12th grade students from across the United States and its territories who participated in the 2025 art contest, a record-breaking number. Kristina Cors, art contest coordinator at NASA’s Langley Research Center in Hampton, Virginia, said, “This contest gives the students a way to connect their passion for art with science, technology, engineering, and mathematics (STEM) and hopefully inspires them to continue exploring those connections throughout their lives.”
Jung is no stranger to the art contest. She said she first participated in 2022.
“Returning to the contest in 2025 felt both nostalgic and thrilling as I came back with improved techniques, more experience, and a fresh new idea that fit this year’s theme,” she said.
Jung used Procreate, a digital illustration and painting app, to create her award-winning work.
“For this piece, I used my customized brush in Procreate,” Jung said. “The biggest merit of using a digital platform for drawing is the variety of textured brushes they offer. They allowed me to vividly illustrate various elements—like the sky, the rocket’s exhaust plume, hair, and roof—each with its own texture and detail.”
Dahyun Jung, grand prize winner of the 2025 NASA Student Art Contest, holds her winning piece “My Wonders with You.”
Credit: NASA/Dahyun JungNASA/Dahyun Jung Jung’s artwork brought to life her own enthusiasm regarding NASA’s work advancing space exploration, aeronautics, and science.
“I’ve always been fascinated by NASA’s commitment to pushing boundaries—especially in space exploration,” Jung said. “Space feels like an undiscovered world, full of endless possibilities, but only a few have had the chance to access it. In many ways, NASA’s work mirrors how I always push creative boundaries in my own art. I’ve always dreamed of traveling to space, and it’s that sense of wonder that inspired my piece.”
Jung said she hopes her artwork can help to inspire awe and stir imagination in others.
“Changing the World” by Jane Lee, 2025 NASA Student Art Contest First Place Winner, 8th Grade Division
Credit: NASA/Jane LeeNASA/Jane Lee “I want my artwork to be the starting point of all wonders—a spark that takes people back to their childhood, when dreams were bold and limitless,” Jung said. “I hope it rekindles that sense of passion, whatever it may be, and encourages others to dare to dream again.
To view a complete list of winners by grade, please click here.
To view all 2025 art contest entries, please click here.
Brittny McGraw
NASA Langley Research Center
About the Author
Joe Atkinson
Public Affairs Officer, NASA Langley Research Center
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Last Updated Aug 25, 2025 Related Terms
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