Milky Way, black hole and James Webb Space Telescope

Astronomers theorize that a low-mass white dwarf, a compact core of a dead ... or distortions in space-time caused by violent events such as the collision of black holes.
Using the XMM-Newton X-ray telescope, astronomers have witnessed a supermassive black hole ... white dwarf, the researchers theorize that it could be detected using ripples in space and time ...