The diameter of a distant solar system is 18 light hours as measured from a planet within the system. A spaceship crosses the solar system in 32 hours, as measured from the planet. 18 light hours represents a [SEIEC'E] equal to about [59'9\"] V )(1010 [ Select] v . The speed of the spaceship as observed from the planet is about [ 59'9\"] V . The diameter of the solar system, as observed from the spaceship, is [59'9\"] V the diameter observed from the planet. An observer at the spaceship measures that the solar system is about [59'9\"] V in diameter. According to the passengers on the spaceship, they cross the solar system in about [59'9\"] V