10 Euros Kepler's Laws

Issued to mark the International Year of Astronomy, this coin commemorates the 400th anniversary of Johannes Kepler's publication of Astronomia Nova in 1609, in which he established his first two laws of planetary motion. Kepler derived those laws not from new observations but from Tycho Brahe's meticulous naked-eye data — records Kepler had effectively acquired under disputed circumstances following Brahe's death in 1601.

Germany's commemorative 10 Euro silver program of this period was produced for collectors rather than circulation, with the Bundesbank distributing issues through face-value sales at post offices and banks.