The WORST seasons of Orbit: Earth's Extraordinary Journey

Every season of Orbit: Earth's Extraordinary Journey ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of Orbit: Earth's Extraordinary Journey!

Right now you're hurtling around the sun at 64,000 miles an hour (100,000 kms an hour). In the next year you'll travel 584 million miles, to end up back where you started. Presenters Kate Humble and Dr Helen Czerski follow the Earth's voyage around the sun for one complete orbit, to witness the astonishing consequences this journey has for us all.