Comet C/2025 R2 (SWAN) from outside the solar system, also known as SWAN25B, was discovered on 11th. It was one day before the comet reached perihelion, the point at which it comes closest to the sun. In this photo taken on 17th, the comet's green coma and tail are captured. Comet SWAN25B is expected to make its closest approach to Earth around Oct. 20.
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