The success of the spacecraft, scheduled to orbit Mars by next September, would carry India into a small club of nations including the United States, Europe, and Russia, whose probes have orbited or landed on Mars. India's first mission to Mars left Earth's orbit in the early hours of Sunday, clearing a critical hurdle in its journey to the red planet and overtaking the recent efforts of rival Asian giant China. The success of the spacecraft, scheduled to orbit Mars by next September, would...