Meteor Trail: the trail of ionized dust and gas that remains along the path of a meteor.
Meteor Stream: a group of meteoroids in a given orbit as they travel around the sun. These meteoroids are usually the by-product of comets, so it is possible for the parent comet to be traveling in the same orbit--if it still exists.
Meteor Shower: the occurrence of meteors as Earth's orbit intersects a meteor stream.
Meteor Storm: intense meteor showers that exceeds 1000 meteors per hour which occurs when Earth encounters a dense group of meteoroids within a meteor stream.
Minor Meteor Showers: meteor showers that produce less than 10 meteors per hour at the time of maximum activity.
When a meteoroid plunges into the atmosphere at a velocity of between 25,000 mph and 160,000 mph (11 and 72 km/sec), the air does not have time to flow around the meteoroid. The result is that friction produces enough heat to ablate (vaporize) the meteoroid and to ionize air molecules, producing a highly charged plasma. The ions quickly recombine and energy is released as light. The whole process usually takes a few tenths of a second and so a meteor appears as a moving streak of light. (The light streak is not just the glowing hot meteoroid itself.)
The wide range in meteoroid speeds is caused partly by the fact that the Earth itself is traveling at about 67,000 mph (30 km/sec) as it revolves around the sun. On the evening side, or trailing edge of the Earth, meteoroids must catch up to the earth's atmosphere to cause a meteor, and tend to be slow. On the morning side, or leading edge of the earth, meteoroids can collide head-on with the atmosphere and tend to be fast.
| Date of Peak Display | Name of Shower | |
| Jan 3-4 | Quadrantids | |
| Apr 21-22 | April Lyrids | |
| May 4-5 | Eta Aquarids | |
| Jul 28-29 | Delta Aquarids | |
| Aug 12-13 | Perseids | |
| Oct 21-22 | Orionids | |
| Nov 3-13 | Taurids | |
| Nov 16-17 | Leonids | |
| Dec 13-14 | Geminids * | |
| Dec 21-22 | Ursids |