Einstein Was Right: Starlight Reveals Hidden Black Holes 'Dancing' in Space

• Astronomers propose a new method to detect hidden binary supermassive black holes using warped spacetime and gravitational lensing.
• The technique involves tracking periodic brightening of distant background stars caused by the black holes' gravitational pull.
• As orbiting black holes bend spacetime, they magnify and distort starlight, creating rhythmic flashes that reveal their presence.
• This method can unmask black holes that don't emit light directly, offering an alternative to detecting luminous accretion discs.
• The discovery could provide early warnings for gravitational wave observatories and enhance understanding of galaxy evolution.