A comet, for one, is a celestial body made up of ice, dust, and gas that orbits the sun. The crossword solutions for this term are 'CLEANSER' (8 letters) and 'REINDEER' (8 letters). CLEANSER refers to the tail of a comet, which is composed of gas and dust that can be seen from Earth as it passes by. REINDEER is a reference to the popular Christmas song, 'Rudolph the Red-Nosed REINDEER, ' which features a REINDEER with a glowing red nose that guides Santa's sleigh through the night sky.