How do the biggest black holes in the universe form? Ripples in spacetime provide a clue

Scientists have discovered that the universe's most massive black holes may form in the densest of stellar environments, or so-called globular clusters. It is in these clusters where violent collisions are common, suggesting a chaotic new origin for these cosmic titans of our cosmos. Scientists pinpointed this potential birthplace of massive black holes by studying ripples in space and time — unified as a single entity called spacetime — otherwise known as gravitational waves . …