Gravitational-wave detectors have captured their biggest spectacle yet: two gargantuan, rapidly spinning black holes likely ...

Clean-energy projects have new deadlines for federal tax credits and limits on foreign parts, taking aim at California’s ...

Once again, gravitational waves have been observed whose origin should not actually exist: a collision of black holes with "forbidden" mass.

Scientists have witnessed evidence of a collision between black holes so huge that it defies their understanding of physics.