Austin Hall, Weird Tales (1923)
“ It was the nucleus that I had to look out for. The head I took to be the effect of radiation, light—an immense coma thrown off from the parent nucleus. The nucleus is the heart of the comet, the one part that had ever defied all our calculations. The real danger was there—likewise the secret. It might be anything, and was so much of a mystery that I would wait until I could see it before I would venture an opinion. It might be fire, a great knot of electrical force, atomic explosion, radiation—anything. Perhaps in its heart I would discover the secret of cohesion. ”
