interstellar hydrogen

例句：

1. 1.The discovery of interstellar hydrogen has sparked a new era in space exploration.
   发现星际氢引发了太空探索的新时代。
2. 2.The study of interstellar hydrogen is crucial for understanding the origins of life on other planets.
   研究星际氢对于理解其他行星上生命的起源至关重要。
3. 3.The search for interstellar hydrogen has led to the discovery of new planetary systems.
   寻找星际氢的尝试导致了新行星系统的发现。