Not long after, in 1987, he became interested in the collisions affecting hydrogen molecules of interstellar gas clouds where stars are born. (astro-canada.ca)
Many new complex chemical compounds were identified for the first time in interstellar gas clouds thanks to the collaborative effort. (astro-canada.ca)
The simplest one is that two massive stars were born as a binary - star system, forming from the same interstellar gas cloud like a double - yolked egg, and orbiting each other ever since. (nature.com)