Auroras on Ganymede, Superflare Warnings and Japan’s Very Bad Week

Welcome back to Astronomy Daily! In S05E55, Anna and Avery explore six fascinating stories from across the cosmos — from auroras on Jupiter’s largest moon to the latest JWST galaxy reveal, a breakthrough solar storm warning system, a beautiful combined nebula image, Japan’s ongoing rocket struggles, and Europe’s ambitious plans for orbital repair robots.   Stories This Episode 1. Ganymede’s Auroras Mirror Earth’s Northern Lights Scientists using data from NASA’s Juno spacecraft have revealed that Jupiter’s largest moon Ganymede has fragmented, patch-like auroras remarkably similar to those seen on Earth. The research, led by the University of Liège and published in Astronomy & Astrophysics, suggests that the fundamental physical processes generating auroras may be universal across magnetised bodies in the solar system. Ganymede is the only moon known to have its own intrinsic magnetic field. 2. New Solar Superflare Forecasting System An international team has developed the first system capable of predicting when and where extreme solar storms are likely to occur, with up to a year’s advance warning. By analysing 50 years of X-ray data, researchers identified a 1.7-year and a 7-year solar cycle whose alignment predicts high-risk periods. The current window (mid-2025 to mid-2026) is flagged as elevated danger. Published in the Journal of Geophysical Research: Space Physics. 3. Cat’s Eye Nebula — Euclid and Hubble Combined NASA and ESA have combined imagery from the Euclid and Hubble space telescopes to produce a breathtaking new composite view of the Cat’s Eye Nebula — the glowing remnant of a dying star about 3,000 light-years away in Draco. The image showcases the nebula’s complex layered shells and intricate inner structure in unprecedented detail. 4. JWST Reveals Spiral Galaxy NGC 5134 The James Webb Space Telescope has captured a stunning infrared portrait of NGC 5134, a barred spiral galaxy 65 million light-years away. Webb’s infrared capability pierces through galactic dust to reveal glowing stellar nurseries and the full cycle of star birth and evolution playing out across the galaxy’s spiral arms. 5. Japan’s Kairos Rocket — Safety Abort on Third Attempt Space One’s Kairos No. 3 rocket was aborted just 30 seconds before liftoff on March 4 when a safety monitoring system detected unstable positioning satellite signals. Following two failed launches in 2024 and multiple weather scrubs this week, the company has yet to set a new launch date. The window remains open until March 25. A successful launch would mark the first orbital success for a fully private Japanese rocket. 6. Europe’s Orbital Repair Robots European companies led by Thales Alenia Space are developing robotic satellites capable of refuelling, repairing and repositioning spacecraft in orbit. A demonstration mission is planned for 2028. With nearly 15,000 operational satellites now in orbit — most never designed to be serviced — the in-orbit servicing market could transform how we manage space infrastructure. Regulatory questions around liability remain unresolved.   Links & Further Reading Full show notes, images and source links: astronomydaily.io Listen on: Apple Podcasts | Spotify | Amazon Music | All podcast platforms Watch on: YouTube — Astronomy Daily Follow us: @AstroDailyPod on Twitter/X, Instagram, Facebook, TikTok, Tumblr Part of the Bitesz.com Podcast Network

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