Nothing is standing or stationary. As you are reading this, the Earth spins around its own axis; it revolves around the sun, the sun is moving through space at a stunning 792,000 km/h around the gigantic center, and our universe is moving at a mind-boggling 2.1 million kilometers per hour.
You may contemplate that as you are reading this, your body in a stationary position. But, everything inside the universe travels, from our planet (Earth) –which revolves on its axis at a speed of approximately 1700 km/h— to the solar system and even the Milky Way Galaxy.
All the planets in the solar system and their personal moons also travel through space. Actually, in order to retain a stable orbit, it is essential for Earth to move around 30 km/s. The innermost planets in our system, Mercury and Venus travel faster while planet Mars and the external planets of our solar system fly through space at a sluggish pace.
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