Astronomers have found evidence that black holes ranging from stellar-mass to supermassive may launch their jets according to a single shared rule, according to reporting by The Brighter Side of News. The finding, covered by the outlet on September 21, 2026, draws on observations of a star being torn apart by a black hole — an event that appears to have exposed the common condition behind jet formation.
Phys.org reports that black holes across the full range of sizes may follow one jet-launching rule, while ScienceDaily describes the result as a common threshold for when these jets form. The Guardian framed the same research around black holes it called "very messy eaters," noting that the work addresses the long-standing question of when black holes "burp" — that is, when they release the energetic outflows astronomers observe as jets.
The reports converge on a similar idea: despite the enormous difference in mass between black holes born from collapsed stars and the supermassive giants at galactic centers, the trigger for launching a jet may be governed by the same threshold. The stellar destruction event served as the test case that revealed this pattern, according to the coverage.
The research speaks to a puzzle that has persisted since jets were first observed emerging from black holes of very different scales. If one rule applies across that range, it would simplify how scientists model these outflows and the way black holes interact with their surroundings.
Further observations of tidal disruption events and other accreting black holes should show whether the proposed threshold holds as a genuinely universal rule.
