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Despite Poland’s ratification of all major international space law treaties, except the 1979 moon treaty, it has not implemented these norms in internal legal order. It is therefore quite difficult to discuss unlegislated national space law. The only domestic reference to space law is the Act establishing the Polish Space Agency and Polish Space Strategy, but this Act is not legislative. Although Poland has many obligations resulting from membership in the European Union (since 2004) and the European Space Agency ...

In the doctrine and judicial practice, it has been stated that the performance of the obligations stipulated in synallagmatic contracts must be made simultaneously by both parties. Therefore, the refusal of one of the contracting parties to perform its own obligations breaks the balance that must exist between the reciprocal performances of synallagmatic contracts so that the other party is also entitled to cease performing its own obligations. Thus, the exception of non-performance consists in the possibility for...