A Brand New Family Experience in Hull, Opens Next Week

A brand new immersive slime experience is launching this month, inside Little Astronauts in Prospect Centre, Hull. 

Introducing Planet Gloop…!

Working behind the scenes to create something completely different for families in Hull and East Yorkshire, this fun, interactive slime adventure is filled with messy play, creativity and unforgettable memories.

Planet Gloop is designed for children aged 3+ and takes families inside the chaotic laboratory of the wonderfully silly Professor Gloop, a slime-loving scientist who believes things are always better when they’re messy.


More than just a slime workshop

Planet Gloop is no ordinary slime making session! From start to finish, it is a full experience where children feel part of the story from the moment they walk through the door.

Inside Professor Gloop’s lab, children will mix, stretch, squish and create their own slime while taking part in a fun theatrical experience led by Professor Gloop and his quirky assistant.

There’ll be glowing slime, bright colours, crunchy textures, scented slime and plenty of surprises along the way.

Every child will also get to take their slime creation home with them after the session.


The Ultimate Slime Experience

Planet Gloop is one of the newest experiences to arrive at Little Astronauts and we truly believe it’s something families in Hull haven’t seen before.

We know how important it is to find activities that children genuinely enjoy while also creating moments families can experience together.

That’s exactly what Planet Gloop is all about! Combining sensory play, creativity, live entertainment and interactive fun into one exciting experience designed to keep children laughing, exploring and making memories.

All slime used during sessions is fully non-toxic and child safe.


Perfect for Weekends, School Holidays & Birthdays

Whether you’re looking for family activities in Hull, things to do with toddlers and young children, or something unique during the school holidays, Planet Gloop has been designed to give families a fun and memorable day out.

The experience is also perfect for birthdays, special treats and grandparents looking for something different to enjoy with grandchildren.


Launching This May at Little Astronauts Hull

Planet Gloop officially launches during the May Bank Holiday inside Little Astronauts at the Prospect Centre in Hull.

Sessions are expected to be popular, especially during weekends and holidays, so we recommend booking in advance.

To stay updated with launch news, sneak peeks and special offers, make sure to follow Planet Gloop and Little Astronauts on social media.

latest blogs

our related blogs

A Brand New Family Experience in Hull, Opens Next Week

A brand new immersive slime experience opens next week, inside Little Astronauts in Prospect Centre, Hull. 

Top Birthday Party Venues for Kids in Hull (2026 Guide)

Here’s a simple guide to some of the best birthday party ideas in Hull, starting with a very special space-themed option…

Hull Family Days Out: Soft Play, Activities and Experiences

Whether you’re planning a weekend outing, a half term treat or just need somewhere for the kids to burn energy, Hull is packed with exciting options.
Humber Bridge Hull suspension bridge landmark over River Humber

Things to Do in Hull with Toddlers: The Ultimate Guide for Families

Hull has plenty of fun things to do for families with toddlers and kids, from exciting soft play centres like Little Astronauts to outdoor parks, aquariums, and museums. Discover the best indoor activities in Hull, family-friendly cafés, and adventures that make every day with little ones unforgettable.
Pepparoni Pizza with loaded Fries and Milshakes

New Winter Menu Incoming

Parents, this one’s for you. Introducing some of what you can expect from our new winter menu... Coming soon!
Toddler playing with balls at interactive sensory table in indoor play area

Why Hull Mums Love Baby & Toddler Mornings at Little Astronauts

Launching on 6th November, Little Astronauts introduces Baby & Toddler Mornings — Hull’s newest soft play experience for little explorers. Enjoy themed sessions, sensory play, and coffee for parents in a fun, welcoming space made for both play and connection.
Cute cartoon child astronaut illustration for kids space theme