悉尼大学材料和等离子体物理系博士候选人Linda Losurdo在实验室中重现了宇宙环境条件，成功从零开始制造出宇宙尘埃。1该研究使用真空泵移除空气后，将玻璃管填充氮气、二氧化碳和乙烯，施加约10000伏电势约一小时，产生了包含碳、氢、氧和氮的复杂有机分子。1这些实验产物的红外信号与真实太空中发现的材料相匹配。1
这项成果为理解生命必需的化学成分如何在恒星周围形成提供了新的实验依据。1研究表明，约42-35亿年前，陨石和星际尘埃颗粒反复撞击地球，将这些复杂有机分子带到了我们的星球。1这一发现有助于阐明地球早期生命所需的化学基础如何来自太空。1该研究已发表在《天体物理学杂志》上。1Losurdo在去年国际陨石学会年会上因其研究工作获得最佳演讲奖。1
Linda Losurdo, a doctoral candidate at the University of Sydney's Department of Materials and Plasma Physics, has successfully created cosmic dust from scratch by recreating universe-like conditions in a laboratory glass tube 1. The experiment involved exposing a mixture of nitrogen, carbon dioxide, and ethylene to approximately 10,000 volts of electrical potential for about one hour, after first removing air from the tube using a vacuum pump 1. The process generated complex organic molecules containing carbon, hydrogen, oxygen, and nitrogen—compounds whose infrared signatures match those of materials detected in actual space 1.
The research, published in The Astrophysical Journal on July 19, 2026, was conducted by Losurdo under the supervision of Professor David McKenzie 1. These findings offer new insights into how the chemical building blocks essential for life form around stars and how comets, asteroids, and meteorites may have delivered these compounds to Earth 1. According to the research, Earth received organic material from meteorites and interstellar dust particles through repeated impacts occurring between approximately 4.2 and 3.5 billion years ago 1. Losurdo received the best presentation award at the International Meteorite Society annual meeting in the previous year 1.
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