All Member States contribute to these programmes on a scale based on their Gross National Product (GNP). The other programmes, known as ‘optional’, are only of

All Member States contribute to these programmes on a scale based on their Gross National Product (GNP). The other programmes, known as ‘optional’, are only of interest to some Member States, who are free to decide on their level of involvement. https://www.esa.int/About_Us/Corporate_news/Funding https://www.esa.int/About_Us/Corporate_news/Funding