Alan Boss is the Chairman of NASA’s advisory group for planet exploration.He told VOA that Proxima b not only confirms the discovery of a planet, but also increases the number of other possible “earths” by a huge amount.Boss said it is possible that most stars may have at least one ...
A few thousand years ago, primitive chemistry focused mostly on converting one substance into another. The word "chemistry" itself is arguably traced to the name of a region of ancient Egypt where such transformation attempts were practiced. Over the centuries, philosophers tried to come to terms ...
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