Both optical and radio astronomy are at risk.
And astronomers are particularly concerned about how these streaks across the sky will impact their research observations. BlueWalker 3 isn't the first bright satellite to launch, joining thousands of SpaceXthat can interfere with observations in visible light. But the new beacon also emits strong radio waves, potentially affecting radio astronomy as well.
Although these projects may improve cell and internet access across the globe, the IAU urges everyone — particularly the companies launching such satellites and the regulatory Federal Communications Commission — to consider the collateral damage to the night sky. AST SpaceMobile is already in talks with IAU representatives about the issue, according to the statement
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