Hubble-Scale Lens on a Diet: China's Yaogan-47 Satellite Breakthrough
China's Yaogan-47 satellite reportedly features a two-meter optical aperture similar to Hubble, despite being significantly lighter, signaling a shift in orbital technology.
It's got the vision of Hubble but weighs less than half. China's latest Earth observation satellite, Yaogan-47, is stirring the international intelligence community with reports of its "global leading" remote sensing capabilities as of January 16, 2026.
Yaogan-47: Heavyweight Vision in a Lightweight Frame
According to the China Science Daily, the Yaogan-47 satellite, launched on December 9 via a Long March 4B rocket, may feature an optical aperture at a two-meter scale. For context, the Hubble Space Telescope and the U.S. KH-11 spy satellites utilize mirrors with a 2.4-meter aperture. While officially designated for land surveys and disaster prevention, the technical specs suggest a potent reconnaissance potential.
The Engineering Paradox: 4 Tonnes vs. 11 Tonnes
The most striking detail is the weight discrepancy. The Hubble weighs approximately 11 tonnes, and KH-11 units can reach 17 tonnes. However, the Long March 4B has a low Earth orbit payload capacity of only about 4 tonnes. This implies China has either achieved a massive breakthrough in lightweight optical materials or utilized a highly compact design. It's important to note that the South China Morning Post mentioned it couldn't independently verify the presence of the two-meter component.
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