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A Lunar Telescope Will Reveal the Shadows of Distant Black Holes ⚡ экспресс

Original: "Beyond Sgr A* and M87*: Sub-Microarcsecond Black Hole Shadow Detection via Lunar-based Extremely Long Baseline Interferometry"
arXiv:2601.02812v2 · 2026-01-06 · CC BY 4.0 · ⏱ 1 min · Galaxies Instrumentation
A telescope on the Moon will make the shadows of supermassive black holes in other galaxies visible.
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The farther apart the antennas, the finer the details they pick up. By merging signals, astronomers effectively turn multiple dishes into a single telescope as big as the distance between them. Add a lunar antenna to the Earth-based array, and you get a virtual eye 384 000 km wide. It's like looking at the cosmos through the eyes of a giant, with pupils set an Earth–Moon span apart.

A lunar telescope with a dish between 5 and 40 meters will sharply capture the shadows of at least six supermassive black holes in other galaxies. For instance, the object in the Sombrero Galaxy needs only a 5-meter antenna, while NGC 5252 requires a 40-meter one.

The real showstopper is the photon ring. This is an ultra-thin rim of light, forged by extreme spacetime curvature. To make it out, we'll need additional antennas drifting in the void between Earth and the Moon. Then black hole shadows will snap into sharp focus, letting us test gravity where it's pushed to its limits.

🎯 The system's angular resolution—0.7 microarcseconds—is like spotting an orange left on the Moon’s surface while standing on Earth.

🎬 Like in Interstellar, but even crisper: the lunar telescope promises to show black hole shadows with Hollywood-level detail.

Scientists
Stephen HawkingJacob BekensteinAlbert EinsteinFritz ZwickyVera RubinBernhard Riemann
Tags
black hole galaxy spacetime curvature
Laws
Hawking radiationgravitational lensingBekenstein-Hawking entropyEinstein field equationsequivalence principlevirial theorem
Original: arXiv:2601.02812v2 · CC BY 4.0 · bridge42worlds