A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.
In a conventional system like our own, rocky planets such as Mercury, Venus, Earth, and Mars orbit closest to the host star. Farther out, gas giants ...
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What is the Fermi paradox - and is there a real answer?
6 billion years old and home to more than 100 billion stars. This reality suggests there is likely a mind-boggling number of ...
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