Assertion: mercury | /r/HasProperty | small
Facets:
value: pretty
type: DEGREE
Source sentences:
text: Mercury is too small and hot for its gravity to retain any significant atmosphere over long periods of time; it does have a tenuous surface-bounded exosphere containing hydrogen, helium, oxygen, sodium, calcium, potassium and others at a surface pressure of less than approximately 0.5 nPa (0.005 picobars).
text: Mercury is a pretty small planet with a diameter of only 4880 km - about one third the size of the planet Earth.
text: It is small and rocky.
text: But Mercury takes 59 days to rotate and is so small — just roughly one-third Earth's size — that its core should have cooled off long ago.
text: It is so small that the moons of other planets such as Ganymede and Titan are larger than Mercury.
text: Because Mercury is so small and far away from Earth, you need a telescope or binoculars with a proper Sun filter to see it.
text: Mercury is a small planet with an equatorial diameter of 4,879 kilometers.