Third Rock
Our home, Earth, is the third planet from the sun and the only world known to support an atmosphere with free oxygen, oceans of liquid water on the surface and — the big 1 - life. Earth is one of the four terrestrial planet: Like Mercury, Venus and Mars, it is rocky at the surface.
Treks Around the Sun
Oh yeah, and the Earth is not just spinning: It is also moving around the sun at 67,000 miles "107,826 kilo meter" per hour.
Earth Is Recycled
The ground you're walking on is recycled. Earth's rock cycle transforms igneous rocks to sedimentary rocks to metamorphic rocks and back again.
The cycle isn’t a perfect circle, but the basics work like this: Magma from deep in the Earth emerges and hardens into rock (that's the igneous part). Tectonic processes uplift that rock to the surface, where erosion shaves bits off. These tiny fragments get deposited and buried, and the pressure from above compacts them into sedimentary rocks such as sandstone. If sedimentary rocks get buried even deeper, they (cook) into metamorphic rocks under lots of pressure and heat.
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