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The early solar system was not a peaceful place.

A reconstruction of the early history of several asteroids indicates that the solar system at its beginnings was much more chaotic than we thought.

Venus may be a sweltering wasteland today, but scientists have questioned whether the planet was always so inhospitable. While previous studies suggested Venus might have once been covered in oceans, new research has found the opposite: Venus has likely never been able to support oceans.

Venus may be a sweltering wasteland today, but scientists have questioned whether the planet was always so inhospitable. While previous studies suggested Venus might have once been covered in oceans,

  Musical notes that sound pleasant together can form a harmony. These notes are usually in a special relationship with each other: when expressed as frequencies, their ratios result in simple fractions, such as four-thirds or three-halves. Similarly, a planetary system can also form a kind of harmony when planets, whose orbital period ratios form simple fractions, regularly attract each other with their gravity. When one planet takes three days to orbit its star and its neighbor takes two days, for example. Using the CHEOPS space telescope, scientists from the University of Geneva, the Uni...