Assertion: galax's center | /r/Synonym | sagittarius a
Facets:
Source sentences:
text: The center of our galaxy is called Sagittarius A*, a massive source of radio waves that is believed to be a black hole that measures 22,5 million kilometers (14 million miles) across – about the size of Mercury’s orbit.
text: The galactic center is an intense radio source known as Sagittarius A