SpaceWe may never figure out where interstellar comet 3I/ATLAS came from The surface of comet 3I/ATLAS may have been so radically altered by cosmic rays that deducing its home star system would be impossible ¿ìè¶ÌÊÓÆµ
SpaceWater might be even more important for alien life than we thought Without enough liquid water on the surface, a planet's atmosphere can become choked with carbon dioxide, raising temperatures to a level beyond what is survivable for all known life ¿ìè¶ÌÊÓÆµ