3I/ATLAS彗星释放出与太阳相距创纪录的水蒸气,这些科学家令人吃惊。 Comet 3I/ATLAS released water vapor at record distance from the Sun, surprising scientists.

2025年10月30日, 星际彗星3I/ATLAS到达太阳最接近的地方, 尽管离太阳距离地球近三倍, On October 30, 2025, interstellar comet 3I/ATLAS reached its closest point to the Sun, revealing unexpected water vapor release despite being nearly three times farther from the Sun than Earth. 美国航天局的Swift天文台检测到氢氧气,这是水的标志,每秒约40公斤,对彗星通常何时激活的假设提出了挑战。 NASA’s Swift Observatory detected hydroxyl gas, a sign of water, at a rate of about 40 kg per second, challenging assumptions about when comets typically activate. 研究史上最古老的70亿年天体正在从视线中消失,但将于11月中旬再次出现,以便进一步观察。 The 7-billion-year-old object, the oldest ever studied, is now fading from view but will reappear in mid-November for further observation.