What are asterisks

Answer 1

multiplication operator
5x5 is written as 5*5 in codes

Answer 2

They can also be used as "to the power of" operator (in python only)
5 ti thr power if 5 is written as 5**5 in python

Answer 3

* -> multiply
** -> exponent

*var -> pointers (C, C++, ect)