Dark matter is a cosmic mystery. It might be made of primordial black holes. A new method suggests looking for them in the Solar System: through glitches in the 'ticking' of pulsars and flares in the Kuiper Belt. It's like spotting an invisible fish by ripples on the water. What if the answer is closer than we think?
The universe is full of invisible mass—dark matter. One hypothesis: it's made of tiny black holes born in the Big Bang. With the mass of an asteroid and smaller than an atom, they slip through planets unnoticed. Stephen Hawking back in the 1970s suggested such holes could explode, but they've never been seen.
Now astronomers have figured out how to track them down. Flying past a pulsar—a cosmic lighthouse with a perfectly steady rhythm of radio pulses—such a hole would gravitationally disturb its 'ticking'. A network of gravitational wave detectors would pick up this glitch. The second trail: a collision with an icy body beyond Neptune's orbit. The impact would heat gas to a glow, flashing for a split second brighter than the full Moon, like a signal bonfire.
These methods for the first time allow us to catch dark matter right in the Solar System, turning an invisible phantom into prey.
🎯 A black hole with the mass of an asteroid is compressed to smaller than an atomic nucleus—it would pierce through Earth without touching a single atom.
🎬 In Larry Niven's story 'The Hole Man', a microscopic black hole falls on Mars—much like in the real hunt for hidden things.