Assertion: cosmic dust's material | /r/HasProperty | cool
Facets:
value: quite
type: DEGREE
Source sentences:
text: Note that new grains can form in the debris of the supernovae explosion (even easier in the debris of a novae explosion) but that material has to be quite cool, so it takes some time (say, on the order of a year) after an explosion for the debris to be cool enough for grains to form.