Interstellar travel has always caught the imagination of humankind. Though our scientific knowledge and imagination have long conceptualised interstellar space travel, actual travel is a massive undertaking. Till date, only two spacecraft (Voyager 1 and 2) have crossed the solar system boundary. More spacecraft will surely follow in future.

The main issue in interstellar travel is that a person aboard the spacecraft sees a different starscape than that from Earth. The astronaut will see position and movement of stars differently than on Earth.