They had to wait until the early 1980s for the first observational evidence for a debris disk around any star to be uncovered. (hubblesite.org)
Carr and the other research team members set out to study the protoplanetary disk around a star known as HD 100546, and as sometimes happens in scientific inquiry, it was by «chance» that they stumbled upon the formation of the planet orbiting this star. (sciencedaily.com)
«When such molecules were first found in the protoplanetary disk around a star in a later phase of star formation, we wondered if they could have formed earlier. (alma-telescope.jp)