Simplify the following text for a Grade 9 native English-speaking person.
Original: The galaxy , is located in the constellation Fornax , and is estimated to have contained roughly a billion stars , although it was only at most one tenth of the diameter of our own galaxy , the Milky Way , and had less than 1 % of the mass of the Milky Way 's stars .
Simplified: The galaxy is in the constellation Fornax , and it is estimated that the galaxy contains a billion stars .