Middlesbrough Council's Integrated Transport Unit is introducing new vehicles to its fleet which transport children and adults with additional needs around the ‘inner city' and beyond.
More than 1,500 journeys are completed every day by the service and to mark the occasion pupils at Priory Woods School in Netherfields were asked to name the first new bus.
And after they came up with the name Saturn, it was agreed the next four buses would also be space themed and are named Earth, Venus, Mars and Moon.
The inspiration came partly from 2019 being the 50th anniversary of the moon landings.
The service transports hundreds of Middlesbrough residents to schools and day centres on a daily basis and within five years the entire fleet of 20 vehicles will have been replaced.
To celebrate the children at Priory Woods School were joined by Middlesbrough Mayor Andy Preston on Saturn's maiden voyage.
He said: "I think it's a brilliant idea to use the inspiration of the 50th anniversary of the moon landings to name these new buses.
"The size of the ambition 50 years ago to send people to the moon was massive and I want all of our young people here in Middlesbrough to be aiming for the stars and believing they can achieve great things."