El casquete polar norte de Marte se imaginaba como hielo sucio, hasta una cuarta parte de polvo. Un nuevo análisis lo rebaja a menos del 3 %: el hielo expuesto es casi puro. El hallazgo convierte ese casquete en un archivo climático más legible y abre una pregunta incómoda sobre la posibilidad de vida.

For a year and a half, a space telescope kept catching brief X-ray flares from the distant universe that nobody could explain. One of them, caught on 4 July 2025, lasted an unprecedented ten minutes — and the trail led back to two dead stars colliding six billion years ago, and possibly to the birth of a magnetar.

It had been drifting through one of the Milky Way's most congested lanes the whole time, uncatalogued and hidden behind dust just 33,000 light-years away. By switching to infrared light, astronomers pulled an entire star cluster — Garro 04 — out of the glare, and found it quietly surfing the galaxy's disk.

NASA scientists have discovered a massive lunar crater formed in 2024 by an asteroid or comet impact. Two new studies reveal that the collision excavated a 222-meter-wide crater, disturbed terrain more than 100 kilometers away and produced a seven-kilometer-wide thermal anomaly. The findings provide important insights into lunar surface evolution and potential hazards for future Moon bases.