Composition, mainly. In particular our Sun has a signature emission of iridium isotopes which can be seen throughout the earth's geology and which is not shared by objects from without the solar system.
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A meteor is a piece of space rock that passes through the Earth's atmosphere, burning up before it reaches the surface. A meteorite is the same piece of rock but it's big enough to survive the journey through the atmosphere, and hits the ground.
A meteor - is a short-lived piece of rock, that usually burns up lasting just as few seconds as it heads through the atmosphere. A comet - is a large ball of dust, rock and ice - that orbits the sun, and can usually be seen for many nights.
A rock from space that hits Earth is called a meteorite. When it enters the Earth's atmosphere, it is known as a meteor or shooting star.
comet moves slowly and appears in the sky for a longer time. meteor moves swifty and seems to fall on the ground.
Meteor or asteroid
A comet is basically composed of space dust and frozen gases while a meteor is made up and does not orbit round the sun.
The meteor is in the atmosphere and is only visible for seconds to minutes. The comet is much further away outside the atmosphere and can be observed for weeks to many months.
A meteor is a lump of rock in space. When one of these pieces of rock comes close to the earth it may burn up in the atmosphere as a shooting star. An earth grazing meteor is a meteor that has come close enough to our atmosphere that it starts to burn up, but will still pass us by as the angle is too shallow. It will go back out into space having been deflected by earths gravity.
A meteor. Technically, "meteor" is the fiery trail of the space rock as it falls. If the rock survives passing through the atmosphere, the rock (or fragments of it) are called "meteorites".
We call the fireball caused by friction and compressive heating a "meteor" as it passes through the atmosphere. The fragments that last long enough to strike the ground are called "meteorites".
Meteor