Element Named After What Is Now a Dwarf Planet
This page is the CodyCross answer for the clue below from Space Exploration, Group 908, Puzzle 3 (Sunspot Cycle).
Question is: Element Named After What Is Now a Dwarf Planet
and the answer is: PLUTONIUM
Word Meaning:
PLUTONIUM — The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.
Definitions from Wiktionary.