Astrobiology

A team of researchers has introduced a new method to detect extraterrestrial life by identifying statistical patterns across multiple planets rather than focusing on individual worlds. Led by Harrison B. Smith and Lana Sinapayen, the approach relies on life's potential to spread between planets and alter their environments. This 'agnostic biosignature' could help prioritize observations amid limited telescope time.

07 aprile 2026 Riportato dall'IA

Researchers at ETH Zurich have discovered that Earth formed with just the right amount of oxygen during its core development, keeping essential phosphorus and nitrogen accessible for life. Too much or too little oxygen would have trapped or lost these elements. The finding highlights a chemical 'Goldilocks zone' critical for habitability.

In 2025, detailed analysis of rocks collected by NASA's Perseverance rover has uncovered tantalising clues suggesting past microbial life on Mars. Features like 'leopard spots' and greenish mineral nodules resemble those linked to microbes on Earth. However, confirming these signs requires returning the samples to Earth, a mission now at risk of cancellation.

23 dicembre 2025 Riportato dall'IA

New measurements from NASA's Juno spacecraft suggest that the ice covering Jupiter's moon Europa is thicker than previously thought, potentially isolating its subsurface ocean from the surface. This thick barrier may complicate efforts to detect life, though alternative nutrient transport mechanisms could still exist. The findings highlight challenges for upcoming missions like the Europa Clipper.