What a opposite word of sky?

When it is noon where you live there is a place on earth where it is midnight? What directs the formation of all stars and planets? How do you levitantion? Would a portable heater on the moon work? What was the date when the first animal go sent of to space? What has happened to the mist to make the mirror look clear again? What is 7000 days in years? How do the eyes gather information? What is inside the sun that powers its immense energy and heat? How can a clock glow in dark? Why did the Aztecs call themselves the people of the sun? If earth moon was destroyed what would happen on earth? What day of the week was August 6th 1980? What did the wright brothers spend so much time researching? How does the telescope help in the study of heavenly bodies? What is a collection of millions of tiny water droplets or ice crystals? How and why does the Moon's shadow miss the earth? What it the Greek god Apollo the protector of? Why were the alps formed? How much is a first day of issue for the man on the moon?