Meteors
    The Earth runs into interplanetary dust all of the time. When this dust enters our atmosphere and burns up, we see a meteor. If the swarm of dust is concentrated in a small enough region of space, we see a meteor shower.
   In such a shower, perspective causes the parallel paths of the meteoroids to appear to come from a radiant.

    Meteor showers do happen during daylight hours, by the way. It is possible to detect these daytime meteors using radio waves.     Here is what to expect in 2009.

   Here is a neat little movie of a shooting star.

   

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Updated April 11, 2009