An eclipse, for one, is an astronomical event in which the moon passes between the sun and the Earth, blocking out the sun's light. The crossword solutions for this term are GUM (3 letters), CAR (3 letters), and SPORTSCAR (9 letters). GUM stands for 'Gravitational Umbral Moment, ' which is a measure of the strength of the eclipse. CAR stands for 'Corona Australis, ' which is the southernmost constellation in the sky. SPORTSCAR stands for 'Solar Prominence and Coronal Ejection, ' which are two phenomena that occur during a solar eclipse.