What's even more unique is the distance that light has to travel. WASP-12b is massive, but it orbits at a range of just 2 million miles from its sun. By comparison, Earth, which is much smaller, orbits our Sun at a gap of almost 93 million miles. This relatively short travel time means that the planet completes an orbit of the sun in about 24 hours. In other words, it’s year is our day. The planet is also tidally locked to it’s star, with one side constantly illuminated, and one trapped in an endless night.