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How to see Comet C/2025 R2 (SWAN) shine in the October sky

Comet C/2025 R2 (SWAN) was discovered on Sept. 10 by Ukrainian amateur astronomer Vladimir Bezugly. It has brightened ...

Cosmic Clocks Reveal Hidden Ripples in Spacetime

A new paper presents a method for distinguishing between different sources of nanohertz gravitational waves. Pulsars may be ...