>Why would certain planet not represent certain traits?
Why would they? How would they possibly?
>Who has really studied it scientifically?
Many, many people, over many, many years. Absolutely no scientifically credible or experimentally replicable effect has ever been found to lend any credence whatsoever to astrology, in any form, ever. Here is a wikipedia article on the subject to get you started[0]. You can find other examples with a simple Google search.
Why would they? How would they possibly?
>Who has really studied it scientifically?
Many, many people, over many, many years. Absolutely no scientifically credible or experimentally replicable effect has ever been found to lend any credence whatsoever to astrology, in any form, ever. Here is a wikipedia article on the subject to get you started[0]. You can find other examples with a simple Google search.
[0]https://en.wikipedia.org/wiki/Astrology_and_science