<a href="https://en.wikipedia.org/wiki/Johannes_Kepler" id="mwUw" rel="mw:WikiLink" title="Johannes Kepler">Johannes Kepler</a> confirms his previously rejected discovery of the <a href="https://en.wikipedia.org/wiki/Kepler's_laws_of_planetary_motion" id="mwVA" rel="mw:WikiLink" title="Kepler's laws of planetary motion">third law of planetary motion</a> (he first discovered it on <a href="https://en.wikipedia.org/wiki/March_8" id="mwVQ" rel="mw:WikiLink" title="March 8">March 8</a> but soon rejected the idea after some initial calculations were made).