Can anything truly be stationary in our constantly moving universe?

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The discussion explores the concept of motion in the universe, emphasizing that nothing is truly stationary due to constant movement at various speeds. Satellites launched from Earth initially have zero velocity relative to the planet but achieve an orbital speed of approximately 8 km/s. This speed allows them to remain in orbit, demonstrating that relative motion is key, as there is no absolute velocity. Earth itself is in motion, traveling around the sun at 30 km/s and the galaxy at about 200 km/s. Ultimately, everything is in motion, even when it appears stationary.
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As you may know, our planet(Earth) , solar system, galaxy are moving in a very fast speed traveling around the universe
but, whenever a satellite being launched out from earth, and it's stationary means no speed
then will it be left behind ??
 
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There is no absolute velocity in the universe. Only velocities relative to something else.
Satellites start with zero velocity relative to the Earth and gain a small velocity (~8km/s) relative to it - just enough to orbit it. Therefore, they stay in an orbit around earth. The speed of (earth+satellite) relative to anything else does not matter.
 
this seems interesting !
so even we're in stationary, we're moving with 8km/s
cool!

Okay my curiosity solved !
:D
 
shinnsohai said:
so even we're in stationary, we're moving with 8km/s
cool!
Much more, depending on the view. Earth is moving around the sun with 30km/s (relative to the sun). The solar system is moving around the galactic center with ~200km/s (relative to the galactic center). Relative to the cosmic microwave background, we are moving with ~400km/s.
Relative to high-energetic cosmic rays, we are moving with more than 99% of the speed of light ;).
 
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