A spherical spaceship traveling to the left at a speed of 90% of speed of light (c) passes by a stationary observer on Earth. How will the ship appear (in shape) to the stationary observer on Earth? A Spherical B. Ellipsoidal C. Conical D. Cuboidal E. Torus

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Frame of reference

In physics, a frame of reference is a coordinate system used to specify either the position or the orientation or velocity of a body. The origin of the coordinate acts as a reference point for measuring the position or relative motion of a body. The coordinate system can be a cartesian coordinate, cylindrical coordinate, or a polar coordinate.