Adding new project - Calculate Weights in different planets using tkinter

[Astrasv]

Description

This is a simple Python mini-project created using Tkinter to calculate weight on different planets in our solar system.

[coderwessel]

I have reviewed the code and it looks good to be added to the repo.

Just for reference I have some suggestions for future improvement:

I advise to not use import * but use import as tk instead (see https://www.educative.io/answers/how-to-import-tkinter-in-python)

I advise to get rid of code repetition by using dictionary to store the relative weights of each planet like this:
rel_weight={"merc":3.7,"ven":8.87, etc,etc}

and use
one function for the weight calculation, and calling it with a planet parameter (myclickmerc then becomes planetclick(merc))
planetclick(planet):
weight_planet= round((int(e.get()) / 9.798) * rel_weight[planet], 2)
...

you can call functions with variables using a lambda function e.g.:
mybutton1= Button(root,text="Mercury", ..., command=myclickmerc, ...)
becomes:
mybutton1= Button(root,text="Mercury", ..., command= lambda: planetclick(merc), ...)