Kathmandu. For the first time in nearly five decades, a crewed spacecraft has left Earth's orbit, heading toward the Moon. Following a day of orbiting Earth, the astronauts of NASA's Artemis II mission ignited their engines, marking the beginning of an historic lunar journey.Approximately 25 hours after liftoff, the 'trans-lunar injection' was successfully completed. The Orion capsule, carrying three American and one Canadian astronaut, exited Earth's orbit and is now traveling toward the Moon, located about 250,000 miles (400,000 kilometers) away. NASA official Lori Glaze announced that this is the first time humans have left Earth's orbit since Apollo 17...