Because most planets orbit in the same disk or plane, and because that plane is rarely aligned with Earth, Kepler can see only a fraction of distant solar systems — those angled even slightly are invisible to the transit method. (businessinsider.com)
These same disks can also be attached to the wheels of the rolling car, making a genuinely awesome visual experience for tots. (momvelous.com)
And since everything in our solar system was formed from that same disk, its momentum sent nearly everything spinning in the same direction. (discovermagazine.com)