Moving SUN: How FAST is it?

Posted: November 8, 2009 in Science Features
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The big ball of fire we call SUN that we see everyday is just one of the billions of stars in the vast universe. Like our own planet Earth, it is also moving at a great pace around the galaxy.  Although as we observe it from our reference point on Earth it looks stationary, it is moving at an enormous speed of 8.0 x 10 5 km/h which means it could take a complete orbit in 250 million years.  It is believed to be moving in the direction of a star VEGA that follows its path which science called the Solar Apex.


photo courtesy

But this activity obviously is not the reason for sunset and sunrise.  We know that the Earth moves around its axis 24 hours a day, and revolve in its orbit around the sun 365 days a year.

The sun’s motion in this Solar Apex is not trouble-free, the rough distribution of matter in the milky way brings about bobbling up and down of the massive bodies in the solar system. This would mean that our planet is naturally exposed to being knocked by massive celestial debris.


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