Google Earth Sky is a new service added to Google earth .To switch to sky in Google Earth . Click on View and, Choose Switch to sky
a view from Google Earth Sky
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You Can watch a lot of things
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The mode sky needs more connection speed. And more memory
To search for stars or galaxies all you have to do is to write its name.
And Google earth sky will correct you if you make a mistake and will guide you
Write (Moon, sun, Pluto, Mars…) or for Galaxy (Andromeda. NGC 4414. NGC 5866 , ….)