Simplify the following text for a Grade 10 native English-speaking person.
Original: All observed GRBs have originated from outside the Milky Way galaxy , although a related class of phenomena , soft gamma repeater flares , are associated with magnetars within the Milky Way .
Simplified: All observed GRBs have come from outside the Milky Way galaxy . Similar phenomena , soft gamma repeater flares , are associated with magnetars within the Milky Way .