From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.
The wait is nearly over for fans of Stranger Things. The final episodes of Season 5 air tonight at 8 p.m. ET. Follow live.
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The most exciting exoplanet discoveries of 2025
In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar neighbor, which lies just 4.2 light-years away — thanks to a powerful new ...
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