There is a Teachers channel available, though it isn't a Sky channel it is an independent channel that uses the same satellite that Sky use.
a cloudless sky with lightning
Lightning strikes from the sky when a channel of charged ions reaches down from the sky to connect with a channel of the opposite charge that is reaching up. This causes a flash of light called a step leader when electricity travels between the charges.
Meteorology
There is no such thing as an "astronomy sign". There is a constellation called Scorpion, and there are astrologicalsigns.
retrogade motion
164 is fox on sky but its called fx
It's a kids channel called Disney XD
On Sky PopGirl is channel 626 and PopGirl +1 is Channel 629. There is no channel called PopGirl on Freeview and I don't know what channel it is on Virgin.
It's on sky channel 110
Channel no.0000000
Sky Channel - Australia - was created in 1984.
Sky channel 155
There is not any sky channel for anything...
Sky channel 242.
it is on sky channel 626
101
it was called UK TV Gold 2