The International Astronomical Union has issued a warning over the newly launched BlueWalker 3 satellite, which is causing interference for both optical and radio telescopes.
A giant new communications satellite that outshines almost all the stars in the night sky is obscuring telescopes’ views of the universe, scientists warn.
BlueWalker 3 is a prototype antenna that was designed and built by Texas-based communications company AST Space Mobile. The satellite launched into low-Earth orbit on Sept. 10 and unfurled its massive communications array on Nov. 14, Live Science's sister site Space.com reported. The mirror-like dish has a surface area of around 693 square feet , making it the biggest commercial communications array ever launched into orbit.
And the supersized satellite is not just blocking telescopes’ optical views of the universe. The IAU also warns that the cell phone signals emitted by the communications satellites could create significant interference for radio telescopes too. BlueWalker 3 is the latest flashpoint in an ongoing debate about astronomical interference caused by communications satellites, which started when SpaceX launched its first Starlink satellites in 2019. . But BlueWalker 3’s enormous size could prove a major turning point in the discussion.
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