Could China’s Yaogan-47 satellite have a lens as wide as the Hubble Telescope?

One of China’s latest Earth observation satellites operating in low orbit could feature an optical aperture at a two-metre scale with “global leading” remote sensing capabilities, according to a China Science Daily report on Thursday last week. The report refers to the Yaogan-47 satellite, which was launched aboard a Long March 4B carrier rocket from the Jiuquan Satellite Launch Centre on December 9. For comparison, the Hubble Space Telescope and likely the US KH-11 spy satellite have main...