在我们的太阳附近，星际物质的平均密度比最好的地球实验室真空还要低1000到10000倍。
The average density of interstellar material in the vicinity of our Sun is 1,000 to 10,000 times less than the best terrestrial laboratory vacuum.
瑟夫一直在与美国宇航局的帕萨迪纳喷气推进实验室（最近火星探测的幕后人员）合作，设计他所说的“星际互联网协议”。
Cerf has been working with NASA's Pasadena Jet Propulsion Laboratory—the people behind the recent Mars expedition—to design what he calls an "interplanetary Internet protocol."
加利福尼亚州帕萨迪纳喷气推进实验室的研究人员调查了在寒冷的星际空间里，有机分子是如何进化成更高级的化合物。
Researchers at the Jet Propulsion Laboratory in Pasadena, California, investigated how organic molecules might evolve toward greater complexity even in the cold of interstellar space.
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