Space questions

Description of my app.
This app I designed is my first.
This is an app that asks the user two questions about space and also gives him information about the end of the existence of the sun.
The two questions in the app are "American questions" and the user is required to choose the correct answer.
If a user chooses the correct answer, the word "correct" and a smiley emoji will appear on the screen.
If a user chooses the wrong answer, the word "wrong" and "sad" emoji will appear on the screen.