Some claim that Earth is only 6,000 years old. But can physics actually support that idea. Radioactive decay, heat flow, starlight travel time, and orbital mechanics all place strict limits on Earth’s ...
10don MSN
How astronomers plan to detect the signatures of alien life in the atmospheres of distant planets
We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of ...
Scientists are using powerful telescopes to study exoplanet atmospheres for signs of life. New missions could soon reveal ...
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