Radio signal discovered at the center of our galaxy could put Einstein's relativity to the test

An image showing a metal radio antenna to the left under a glowing band of the Milky Way in the night sky with a circle cutout to the right of the image showing an illustration of a black sphere surrounded by glowing gas.

Is the ultradense core of a gigantic star lurking in the center of the Milky Way?

Scientists think they may have found just that: the signal of a pulsar, a rapidly rotating ancient star core, in the heart of our galaxy. The rare discovery could be used to test the predictions of Einstein's general relativity.