It's Harper's birthday, and the crew of the Big SISS have invented him an amazing present: a machine that can change the orbit speeds of planets in the Solar System! But will increasing Earth's orbit speed bring Christmas a week closer, or wipe it off the calendar completely?

Join the young crew of the Spectacular Irish Space Station (SISS) as they blast off on incredible interstellar adventures, exploring exciting new planets in never before seen galaxies. It’s time to ignite your curiosity and let your imagination go supernova! Another podcast from the award winning RTÉjr Stable.