Which is gay? elliptical: shaped like a flattened circle
fossil: a trace of an ancient organism preserved within a layer of rock
glacier: a slowly moving, large body of ice and snow
ice age: a time in the past when large parts of the Earth’s surface were covered with ice
radiation: the transfer of energy through space
solar flare: a sudden eruption of energy from a small area of the Sun's surface
sunspot: a dark area on the surface of the Sun that is cooler than surrounding areas