Hidden Moon, Reversed Aging Protein, and Antarctic Tipping Point – Science Breakthroughs (Aug 22–23, 2025)
Astronomers observed SN 2021yfj, a stripped-down supernova whose progenitor shed hydrogen, helium, and carbon before exploding, leaving an exposed silicon/sulfur core (Nature, Aug 20, 2025). NASA’s James Webb Space Telescope spotted a