>>905269
The 200 inch telescope at the palomar observatory, which used to be the largest telescope in the world, was also designed with the help of an 'elf':
>"a brilliant and wealthy astronomer named George Ellery Hale. Actually, the idea was presented to Hale one night. While he was playing billiards, an elf climbed in his window and told him to get money from the Rockefeller Foundation for a telescope. "

I reckon all these helpful elves are the same thing as the grey aliens that people keep seeing.