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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 ...

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

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 ...