SMRTR Science & EngineeringAug 7, 2025Interesting Engineering

Black-hole mission could become a reality with paperclip-sized nanocraft

SMRTR summary

A "paperclip-sized" spacecraft hurtling toward a black hole at one-third the speed of light. That's the audacious century-long mission proposed by astrophysicist Cosimo Bambi of China's Fudan University.

The gram-scale nanocraft, propelled by powerful Earth-based lasers striking its light sail, could reach a black hole 20 light-years away in about 70 years, with data returning over the following decades.

"We should be 'lucky' and have a black hole within 20-25 light years," Bambi told Interesting Engineering. "If there is, it should not be too difficult to find a community interested in sending a probe to study this object."

While the mission faces significant hurdles—including identifying a nearby black hole and developing technology that doesn't yet exist—Bambi suggests costs could fall from today's trillion-euro estimate to about a billion euros within 30 years.

The scientific payoff would be profound: direct measurements from the universe's most extreme environment could test Einstein's general relativity and answer fundamental questions about physics that ground-based instruments cannot resolve.

SMRTR provides this summary for quick context. The original article belongs to Interesting Engineering.

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