<a href="https://en.wikipedia.org/wiki/NASA" id="mwAQQ" rel="mw:WikiLink" title="NASA">NASA</a>'s <a href="https://en.wikipedia.org/wiki/Kepler_space_telescope" id="mwAQU" rel="mw:WikiLink" title="Kepler space telescope">Kepler space telescope</a> confirms the discovery of <a href="https://en.wikipedia.org/wiki/Kepler-186f" id="mwAQY" rel="mw:WikiLink" title="Kepler-186f">the first Earth-size planet</a> in the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Circumstellar_habitable_zone" id="mwAQc" rel="mw:WikiLink" title="Circumstellar habitable zone">habitable zone</a> of another star.