Meteors are space rocks that enter the earths atmosphere, as the rock falls the resistance of the air on the rock makes it extremely hot. what we see is a 'shooting star'. The bright light that follows is the glowing hot air.
When earth encounters many space rocks we call it a meteor shower. As a comet gets closer to the sun some of its icy surface boils off, releasing lots of particles of dust and rock. This debris gets chucked along the comets path, especially in the inner solar system (where we live). As the earth makes its journey around the sun several times a year, its orbit crosses the orbit of a comet, which means we pick up the debris that comes with it.
my drawing is an abstract landscape containing unusual debris.. space junk from my imagination.