X‑rays from interstellar comet 3I/ATLAS reveal solar‑wind interaction and hidden gases
Two X‑ray space telescopes — ESA's XMM‑Newton and a JAXA instrument — have detected X‑ray emission from interstellar comet 3I/ATLAS as it approaches Earth. The high‑energy glow, extending roughly 250,000 miles, indicates solar‑wind charge‑exchange and reveals otherwise hidden volatile gases in the comet's coma.