  In this article, we detail the strategic partnerships "Per Aspera Ad Astra
Simul" and "European Collaborating Astronomers Project:
Espa\~na-Czechia-Slovakia". These strategic partnerships were conceived to
foment international collaboration for educational activities (aimed at all
levels) as well as to support the development and growth of early career
researchers. The activities, carried out under the auspices of these strategic
partnerships, demonstrate that Key Action 2 of the Erasmus+ programme can be an
extremely valuable resource for supporting international educational projects,
as well as the great impact that such projects can have on the general public
and on the continued development of early career researchers. We strongly
encourage other educators to make use of the opportunities offered by the
Erasmus+ scheme.
