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NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the sky ...

On Jan. 4, Earth received its maximum radiation from the sun, which was at its largest in the sky for 2025. The difference isn't huge — the sun today appears to be a mere arcminute (1/60th of a degree ...

As the first trailer for the Ryan Gosling-starring Project Hail Mary arrives, we explore the science behind the sci-fi.