... an exploding star ? ... There are at least three reasons why scientists are so interested in these exploding stars and why "supernova'' should be a household word for any student who cares about cosmic history and the origins of humanity. ... When Earth glides through such a swarm during our yearly path around the Sun, we experience a "meteor shower.' ... All of the bits of debris that make up a meteor shower speed along parallel to one another. ... The Best Meteor Showers . ... Shower . ...