Meteors are fragments of ice and rock derived from comets as they orbit around the sun. When earth passes through a trail of such meteors (comet debris) it experiences meteor showers. A series of meteorites encountered at once is meteor shower. But Geminid showers are unique as they originate from an asteroid or an extinct comet called 3200 Phaethon. Geminid showers are seen in December. It is followed by Ursids meteor shower.