Certainly, a planetary core can be cold. The heat of our own planetary core is the result of radioactive decay of various elements in the core and mantle, but eventually that heat source will be used up, and the residual heat will gradually leak away into space. There could be other planets which never had much or any abundance radioactive content in the first place.
Mars
no
cold liquid
very, very cold
The Earth's core is thought to be predominantly iron (85 %) with some (4-5%) nickel and the remainder oxygen, silicon, hydrogen and carbon and a number of siderophile (iron liking) elements that descended to the core with iron during planetary differentiation.Mostly iron.
It becomes a white dwarf.
Probably yes, but planetary scientists are still not certain about it.
Mars
The crust is brittle and cold but the outer core is fluid in state.
core, cord, cold, colt
no
depends where you are
It is a core which is made up of ice. It is cold
MARE MORE CORE CORD COLD COLT MARE MORE CORE CORD COLD COLT
The Earth's core is thought to be predominantly iron (85 %) with some (4-5%) nickel and the remainder oxygen, silicon, hydrogen and carbon and a number of siderophile (iron liking) elements that descended to the core with iron during planetary differentiation. The inner core is solid and the outer core, liquid.
it is nearer to the core
Hypothermia.