I want to put them in my son's aquarium will they float?

I believe they would float. They are a very thin plastic and hollow. I think that might look good in your son's fish tank

How long do they glow? I bought another set and it only glows for 2 minutes.

I can't give you an answer because my grandsons are 2 and 4 years. As soon as they came out of the package they were playing with them and carrying them around. They adore anything related to the planets.

I held them in my hand (inside the clear box) in a dar room and they did not glow. What does one have to do to make them glow?

You would have to hold the, up to a light source first like outside sun or a lamp. I don’t believe these are very strong though.

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University Games 3D Planets in a Tube

Product ID: 406060171

Details

Age Range (Description)
Baby
Brand
University
Item Weight
60 Grams
Item dimensions L x W x H
5.7 x 5.7 x
Theme
Space

🌌8 planets + Pluto glow-in-the-dark

📏Planets sized 1.9-5 cm for realistic scale

🧲Includes adhesive putty + 7.5m string for easy ceiling setup

Description

🌠 Light up your space with the universe’s coolest glow!

EDUCATIONAL STYLISH - A chic, interactive décor piece that doubles as a fun learning tool—perfect for professionals who value both style and substance.
EFFORTLESS INSTALLATION - Comes with adhesive putty and 7.5 meters of string—no tools or batteries needed to bring the cosmos indoors.
LIFETIME GLOW GUARANTEE - Enjoy a lasting celestial glow that keeps your room starry night after night, making bedtime magical.
PERFECTLY SIZED PLANETS - Each planet ranges from 1.9 to 5 cm, offering a tactile and visually engaging scale model for your space-loving soul.
ILLUMINATE YOUR UNIVERSE - Create a mesmerizing glow-in-the-dark solar system right on your ceiling that sparks curiosity and wonder.

The University Games 3D Planets in a Tube is a glow-in-the-dark solar system model featuring all 8 planets plus Pluto, with planet sizes ranging from 1.9 to 5 cm. It includes adhesive putty and 7.5 meters of string for easy ceiling installation, requires no batteries, and comes with a lifetime glow guarantee, making it an educational and stylish décor piece for indoor use.

Specifications

ASIN	B0030BJRWS
Age Range Description	Baby
Battery Types	No batteries required
Brand	University Games
Customer Reviews	4.1 4.1 out of 5 stars (3,197)
Educational Objective	Understanding the Solar System
Global Trade Identification Number	05018163003825
Indoor Outdoor Usage	Indoor
Is Assembly Required	No
Item Dimensions	5.7 x 5.7 x 20.5 Centimeters
Item Weight	60 Grams
Manufacturer	University Games
Manufacturer Part Number	CRE-19464
Material	Adhesive putty, rope
Model Number	CRE-19464
Number of Packs	1
Operation Mode	Manual
Set Name	3D Planets in a Tube
Size	1.9-5 cm
Sub Brand	university
Theme	Space

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TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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