There is no particular English word used to denote three quarters of the galaxy.
three quarters
new moon
a quarter of a year
Samsung Galaxy Tab 4 will be released during the second quarter of 2014.
Our galaxy is called the Milky way, but the closest neighbouring galaxy is called the Andromeda galaxy.
Every three months is called a quarter. And there are four quarters in a year.
Three quarters is bigger
The Milky Way galaxy is.... called the Milky Way Galaxy
That is called the "Local Group".
what is the time quarter to three in the afternoon
Quarter to Three was created in 1961-05.
As of this writing, the Samsung Galaxy S5 Mini is releasing sometime in the 2nd quarter of 2014.