AI Insight
Scientists propose that a mysterious gravitational-wave background detected in the universe may originate from descendants of hypothetical "Dark Stars" that existed 13 billion years ago. These Dark Stars, if they existed in the early universe, could have eventually formed the first supermassive black holes. The gravitational waves they produced may account for a significant portion of the cosmic hum currently being observed, potentially providing evidence for both the formation mechanism of early supermassive black holes and the nature of dark matter.
Why it matters
This finding could resolve two major cosmological mysteries simultaneously: explaining how supermassive black holes formed so early in the universe's history and providing indirect evidence for dark matter's properties. It offers a new observational method to study the universe's first billion years, a period that remains largely inaccessible to conventional telescopes.
Understand the Science
Today’s mysterious gravitational-wave background may preserve clues about how the Universe’s first supermassive black holes formed. Descendants of hypothetical Dark Stars could be responsible for a major portion of the signal, offering a surprising new way to investigate cosmic dawn and dark matter.
Source: A mysterious cosmic hum may come from 13-billion-year-old dark stars