
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, the teams must guess which animals Sam and Ayo are looking at through their telescope based on a series of clues. Then the teams must work out which season James is talking about by standing under the correct tree. If they’re correct, they’ll get covered in spring blossom, summer sunlight, autumn leaves or winter snow. Finally, the teams learn about structures by building arched bridges that they can step across to reach an island. \n\nMeanwhile, Ayo and Sam are packing for a mission in the space capsule, but they can’t carry more than 2.5kg. Can they work out what to take so that their packs aren’t too heavy?
Source: CBeebies
Series 1: 1. Exercising
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this world prizes. First, they must work out if an object is heavier or ligh ...
11-01-2026
CBeebies
Series 1: 26. Magnets
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must decide whether objects will float or sin ...
10-01-2026
CBeebies
Series 1: 25. Leonardo Da Vinci
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must guide magnetic rockets out of the Magnet ...
04-01-2026
CBeebies
Series 1: 24. Musical Instruments
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must match a sequence of colours given to the ...
03-01-2026
CBeebies
Series 1: 23. Defying Gravity
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must decide whether objects will float or sin ...
28-12-2025
CBeebies
Series 1: 22. Temperature
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must use their knowledge of forces by pumping ...
27-12-2025
CBeebies
Series 1: 21. Fingerprints
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, the teams must identify objects using just one of ...
21-12-2025
CBeebies
Series 1: 20. Measurements
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must guide magnetic rockets out of the Magnet ...
20-12-2025
CBeebies
Series 1: 19. Heavy And Light
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, the teams must guess which animals Sam and Ayo are ...
14-12-2025
CBeebies
Series 1: 18. Memory
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must match a sequence of colours given to the ...
13-12-2025
CBeebies
Series 2: 3. Chris The Crystal
Two teams take on three scientific challenges based on floating, sinking, seasons and gravity. Sam needs salt for his recipe, James has used it up making Chris the salt crystal.
22-03-2025
CBeebies
Series 2: 1. Fossil Hunt
Two teams take on three scientific challenges based on materials, plants and forces. James is excited about his fossils, but one of them has gone missing.
15-03-2025
CBeebies
Series 2: 8. Maps In Space
Two teams take on three scientific challenges based on sound pitch, the human body and forces. Ayo and Sam look at maps of places on earth and a map of the solar system.
06-04-2025
CBeebies
Series 3: 2. Robot Dog
Two teams take on three scientific challenges based on heavier and lighter, shadows and pollination. Sam brings a new pet to STARS - a robot dog called Rover - but has lost its ...
08-06-2025
CBeebies
Series 2: 4. Young Scientist Club
Two teams take on three scientific challenges based on coding, animal habitats and healthy eating. Sam receives a video call from two members of his Young Scientist Club on Earth.
23-03-2025
CBeebies
Series 1: 6. Space Biscuits
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this world prizes. First, the teams must identify objects using just one of ...
26-10-2025
CBeebies
Series 3: 8. Extra Special X-ray
Two teams take on three scientific challenges based on coding, animal habitats and pollination. Ayo can’t find her special pen anywhere. Where can it be hiding?
29-06-2025
CBeebies
Series 2: 2. Space Worms
Two teams take on three scientific challenges based on coding, shadows and pollination. STARS is almost out of space lettuce, but James has an ingenious way to grow some more.
16-03-2025
CBeebies
Series 2: 7. Invisible Science
Two teams take on scientific challenges based on heavier and lighter, the human body and the solar system. James grows a crop of lemons, which gives Sam an idea for an 'invisibl ...
05-04-2025
CBeebies
Series 1: 11. Reusing
Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this world prizes. First, they must use their knowledge of forces by pumping ...
15-11-2025
CBeebies