Complex sentence: The accretion disk of the protostar IRAS 16293-2422 has parts rotating in opposite directions, the first time a counterrotating accretion disk has been found and means that when planets form, the inner planets will orbit in the opposite direction to the outer planets.
Split into simpler sentences: The accretion disk of the protostar IRAS 16293-2422 has parts rotating in opposite directions. When its planets form, the inner planets will orbit in the opposite direction to the outer planets.