... Molecular Cloud Barnard 68 . ... What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud . ... One of the most notable of these dark absorption nebulae is a cloud toward the constellation Ophiuchus known as Barnard 68, pictured above . ... It is possible to look right through the cloud in infrared light. ... Публикации с ключевыми словами: molecular cloud - absorption nebula - Barnard 68 - Барнард 68 - Молекулярные облака - темная туманность . ...