Question

Why cannot a satellite be launched by an aeroplane or some great plane

Answer 1

Because there is no plane that could do that. And even if there was one, you gain almost nothing from doing so.

The Saturn V rocket weighed almost 3 thousand tons before launch. The Space Shuttle weighed almost 2 thousand tons.

A Boeing 747 can "only" carry about 120 tons. That's something like 5% the weight of the space vehicles mentioned above. You'd need 20 Boeing planes to carry one fully fueled space vehicle.

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Answer 2

You know Newton's law if it was launched the aeroplane itself will loose it's balance or either it must have very high speed which is economically not possible