PLEASE HELP!! Will mark brainliest

The nebular hypothesis helps astronomers explain all of the following EXCEPT...
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-why the planets in our solar system orbit in the same, flat ecliptic plane.

-why the planets in our solar system spin in the same direction.

- why most galaxies are moving away from earth.

-why 99% of the matter in the solar system is contained in the sun.

PLEASE HELP Will mark brainliest The nebular hypothesis helps astronomers explain all of the following EXCEPT why the planets in our solar system orbit in the class=