more searches
3 wordies list

mysterium

Leave a comment, citation, or private note
2 months ago whichbe said:

A hypothetical substance to which a galactic radio emission at 1665 megahertz was attributed until it was identified as an exceptionally strong component of a set of four lines emitted by the hydroxyl radical, OH. (From WWFTD)

Register or login to leave a comment.
first listed by:
geekwad (250 words)
appears in these lists: