Chapter 1
Mission Mercury
Gavin follows a puzzling signal from Earth to the International Space Station—and prepares to investigate Mercury.
Book coming soon
Science + story + imagination
Big questions. Brilliant adventures.
Join Gavin and his galactic crew as they explore planets, solve mysteries, and discover how our Solar System really works.
Mission factEarth is the only world we know has life.
Welcome, explorer
Every mission begins with a curious question.
Gavin is an eight-year-old astronaut with a red suit and a special gravity power. Alongside Denny, Bark, and Cloud, he takes young explorers from Earth to Mercury and beyond—with real science at the heart of every adventure.
Read storiesTry activitiesLearn planet factsWatch missions
Story library
Start with Chapter 1
From a strange gravity wobble on Earth to a mysterious signal near Mercury, each chapter mixes a cliff-hanger with carefully checked science.
Meet the crew
Denny's transformation lab
Discover the clever shark who can become a Finship, rover, or the perfect machine for a mission.
Planet field note
Mercury: hot, cold, and cratered
Mercury has no moons, a very thin exosphere, and ice hidden in some permanently shadowed craters.
Meet the crew
Different gifts. One brave team.
Gavin
The kind, curious astronaut who can gently control gravity nearby.
Denny
Gavin's genius shark best friend, ready to transform for any journey.
Bark
A speedy, protective Mars friend with a playful heart.
Cloud
A hilarious colour-changing friend from Jupiter who gives oxygen nearby.
Mission control
Try a galactic activity
These short activities are designed for curious explorers. Fictional characters, real science.
Quick quiz
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Gravity catch
Help Gavin gather drifting star sparks.
Tap each spark before it floats away. Collect 8 to steady the Finship's gravity field.
0 / 8 sparks
Watch and listen
Planet facts, short missions, and crew-sized laughs.
Follow Gavin Goes Galactic for science adventures made for young explorers and the grown-ups who learn alongside them.
For parents and grown-ups: selected animation clips are made with Higgsfield. If you choose to try it through this affiliate link, Gavin Goes Galactic may earn a commission at no extra cost to you.
Explorer questions
Quick answers about Gavin Goes Galactic
What is Gavin Goes Galactic?
Gavin Goes Galactic is a science and story website for curious explorers aged 5 onwards, with space adventures, planet facts, and playful activities.
How many moons does Mercury have?
Mercury has zero moons.
Where can I watch and listen?
Watch on YouTube or listen to the show on Spotify.