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Comet
Exemplu
The comet orbits the sun in a highly elliptical path, taking it far out into the outer reaches of the solar system.
I have glimpsed the rare comet in the night sky.
The elliptical orbit of the comet was represented by an ellipsoidal trajectory on the astronomical chart.
The path of the comet cuts the trajectory of the asteroid, resulting in a close encounter.
Using a laser pointer, the astronomer described the trajectory of the comet across the night sky.