Invisible Black Holes Put Gravity to the Test ✛ ✦
A century ago, Albert Einstein rewrote the laws of gravity: it’s not a force but the curvature of spacetime — as if massive bodies dent a stretched sheet, making neighbors roll into their embrace. If you weave an invisible field into this ballet, the dance of black holes gets more tangled: each one grows 'hair' — a unique cloud that alters its motion.
Scientists carried out computer simulations of a duet of two 'hairy' holes at close range. It turned out that their deflection angle matches formulas to within a fraction of a degree, even when the swing exceeds 200°. Precision like a ballet where every step is measured to the millimeter.
This result is a pass for simplified calculations when searching for defects in gravitational waves caught by LIGO-class detectors. After all, if somewhere in the rhythm of the Universe a false note is heard, we’ll be the first to know. It’s no wonder Stephen Hawking and Kip Thorne taught us: even where time stretches slower and hidden information (entropy) is colossal, physics remains predictable.
The black holes' deflection angle was predicted with precision equivalent to hitting a coin tossed from the summit of Mount Everest.
If a scalar field existed in 'Interstellar,' the black hole Gargantua could distort not only light but also time so fantastically that the heroes would lose track of years.