muslim symbol of crescent moon + star?

The star and crescent symbol has been around for longer than Islam. There are coins from Byzantion (modern Istanbul) in the 1st Century BC with the star and crescent symbol on them, and it seems likely that the Turks adopted the symbol from there, although nobody seems too sure.

There are a few bright stars along the path of the moon, and the planets also follow the same path, so there is no way of telling which particular star or planet was intended by the symbol.

Apparently you are in the wrong section, but if you need info about such issue, you can check some of these flags and what they mean:

http://en.wikipedia.org/wiki/Flag_of_Turkey

http://en.wikipedia.org/wiki/Flag_of_Pakistan

http://en.wikipedia.org/wiki/Flag_of_Tunisia

Jupiter is near the Moon now,Venus is not visible at this time.