On a sun-drenched June morning in Tenerife, representatives from 23 European nations gathered not to discuss tourism or trade, but the cosmos—making decisions that will shape humanity’s understanding of the universe for decades to come. At the biannual meeting of the European Space Agency’s Science Programme Committee, a quiet but profound commitment to curiosity was reaffirmed: 13 vital space missions will continue their journey through the stars, and a bold new explorer, Arrakihs, has been officially adopted to probe the ghostly haloes surrounding galaxies.
These choices are more than administrative formalities—they reflect Europe’s unwavering investment in scientific discovery. The extended missions, including Hubble, XMM-Newton, and the Sun-scanning Solar Orbiter, have already rewritten textbooks. Solar Orbiter, launched in 2020, is now delivering the first-ever images of the Sun’s poles, and its extended mission will push it to even higher latitudes, revealing solar dynamics never seen before. By prolonging the lives of these spacecraft, ESA ensures that scientists across Europe and beyond can keep mining their data for breakthroughs—from exoplanet atmospheres with Cheops to black hole emissions with XRISM.
Among the most exciting developments is the formal adoption of Arrakihs, ESA’s second ‘fast-class’ mission, set to launch by the end of 2030. Led with strong contributions from Spain, Arrakihs will use repurposed technology to study the faint stellar haloes that surround galaxies—fossil records of cosmic collisions and evolution. These haloes, built from stars torn from their parent galaxies, hold clues to how the universe assembled over billions of years. By capturing their dim light, Arrakihs will act as a galactic archaeologist, sifting through cosmic ruins to reconstruct the history of galaxy formation.
Meanwhile, the next medium-class mission is narrowing into focus. Plasma Observatory, proposed as ESA’s next flagship in this category, would investigate how the Sun’s charged particles interact with Earth’s magnetic shield. It aims to trace how solar energy enters the magnetosphere, accelerates particles, and sparks space weather that can disrupt satellites and power grids. While the final decision will come in November 2026, the scientific community sees Plasma Observatory as a crucial step in understanding our planet’s place in the solar plasma environment.
As Professor Carole Mundell, ESA’s Director of Science, put it: 'We build missions that meet the needs of European scientists, driving innovation and discovery.' With telescopes peering into dark energy, probes circling Mars, and new missions poised to launch, Europe’s science programme isn’t just enduring—it’s evolving, ensuring that the quest to understand our universe remains alive, collaborative, and profoundly human.