<p>&nbsp;</p>

<p><ins class="ice-ins ice-cts-1" data-changedata="" data-cid="2" data-last-change-time="1525969276756" data-time="1525969276756" data-userid="162" data-username="Author"><b>Earth</b>&nbsp;is the third&nbsp;<a href="https://en.wikipedia.org/wiki/Planet" title="Planet">planet</a>&nbsp;from the&nbsp;<a href="https://en.wikipedia.org/wiki/Sun" title="Sun">Sun</a>&nbsp;and the only object in the&nbsp;<a href="https://en.wikipedia.org/wiki/Universe" title="Universe">Universe</a>&nbsp;known to harbor&nbsp;<a href="https://en.wikipedia.org/wiki/Life" title="Life">life</a>. According to&nbsp;<a href="https://en.wikipedia.org/wiki/Radiometric_dating" title="">radiometric dating</a>&nbsp;and other sources of evidence, Earth&nbsp;<a href="https://en.wikipedia.org/wiki/Age_of_Earth" title="Age of Earth">formed</a>&nbsp;over 4.5&nbsp;<a href="https://en.wikipedia.org/wiki/Bya" title="Bya">billion years ago</a>.<sup id="cite_ref-USGS1997_28-0"><a href="https://en.wikipedia.org/wiki/Earth#cite_note-USGS1997-28">[24]</a></sup><sup id="cite_ref-29"><a href="https://en.wikipedia.org/wiki/Earth#cite_note-29">[25]</a></sup><sup id="cite_ref-30"><a href="https://en.wikipedia.org/wiki/Earth#cite_note-30">[26]</a></sup>&nbsp;<a href="https://en.wikipedia.org/wiki/Gravity_of_Earth" title="Gravity of Earth">Earth&#39;s gravity</a>&nbsp;interacts with other objects in space, especially the Sun and the&nbsp;<a href="https://en.wikipedia.org/wiki/Moon" title="Moon">Moon</a>, Earth&#39;s only&nbsp;<a href="https://en.wikipedia.org/wiki/Natural_satellite" title="Natural satellite">natural satellite</a>. Earth&nbsp;<a href="https://en.wikipedia.org/wiki/Earth%27s_orbit" title="Earth's orbit">revolves around the Sun</a>&nbsp;in 365.26 days, a period known as an Earth&nbsp;<a href="https://en.wikipedia.org/wiki/Year" title="Year">year</a>. During this time, Earth&nbsp;<a href="https://en.wikipedia.org/wiki/Earth%27s_rotation" title="Earth's rotation">rotates about its axis</a>&nbsp;about 366.26 times.<sup id="cite_ref-sidereal_solar_31-0"><a href="https://en.wikipedia.org/wiki/Earth#cite_note-sidereal_solar-31">[n 5]</a></sup></ins></p>

<p><ins class="ice-ins ice-cts-1" data-changedata="" data-cid="2" data-last-change-time="1525969276756" data-time="1525969276756" data-userid="162" data-username="Author">Earth&#39;s&nbsp;<a href="https://en.wikipedia.org/wiki/Earth#Axial_tilt_and_seasons">axis of rotation</a>&nbsp;is tilted with respect to its orbital plane, producing&nbsp;<a href="https://en.wikipedia.org/wiki/Season" title="Season">seasons</a>&nbsp;on Earth.<sup id="cite_ref-yoder1995_32-0"><a href="https://en.wikipedia.org/wiki/Earth#cite_note-yoder1995-32">[27]</a></sup>&nbsp;The&nbsp;<a href="https://en.wikipedia.org/wiki/Gravity" title="Gravity">gravitational interaction</a>&nbsp;between Earth and the Moon causes&nbsp;<a href="https://en.wikipedia.org/wiki/Tide" title="Tide">ocean tides</a>, stabilizes Earth&#39;s orientation on its axis, and gradually slows its rotation.<sup id="cite_ref-aaa428_261_33-0"><a href="https://en.wikipedia.org/wiki/Earth#cite_note-aaa428_261-33">[28]</a></sup>Earth is the densest planet in the&nbsp;<a href="https://en.wikipedia.org/wiki/Solar_System" title="Solar System">Solar System</a>&nbsp;and the largest of the four&nbsp;<a href="https://en.wikipedia.org/wiki/Terrestrial_planet" title="Terrestrial planet">terrestrial planets</a>.</ins></p>
