What is Galactic year / Cosmic year | Planets revolves around the sun, but SUN revolves around ?????

A year Mean 365 days, But do you know what is Galactic Year.
Earth revolves around the sun, Sun revolves around ??????
What is Cosmic year.

The universe is massive and appears to contain infinite wonders. As our technologies become more advanced, we are poised to discover even more and perhaps prove our current theories wrong.
Still, our observations and studies so far have revealed many strange phenomena in space. Surprisingly, one of the most complex objects in the universe is right here on Earth—and even closer than you probably imagined.

[ramchandraoke]

Very good information. Thank you so much for making video .. 👏👏👏👌👌👌❤

[edmundeverett]

An absolutely fantastic and fascinating video, many thanks for making and sharing 😊👍

[bobbymad]

The best ever content of the world..it should get millions of views