Key Takeaways A large solar filament erupted around 15 July 2025, carving a dramatic ‘dark scar’ on the Sun, reported as roughly 250,000 miles (about 400,000 km) long, according to sources like Space.com and Petapixel. NASA‘s SDO imagery in AIA wavelengths, along with Goddard SVS visualizations, captured the event as a filament eruption—cooler plasma held […]