Splashery.ContentsPlayground
Star Cluster, a still.

Fig. 75. §5 Space

Star Cluster

A globular cluster is a ball of hundreds of thousands of stars held together by their own gravity, packed tightest at the middle.

PlaygroundHow to play

1Facts

Shelf
Space
Kind
Built from a recipe
Sound
Yes
Licenses
Own work (made in the page)

2How to play

Tap it to make the cluster breathe in and out.

3Its controls

Table I. Every control on this Splash.

ControlKindRangeStart
Breathe in and outTap
BreatheButton

4About it

A globular cluster is a ball of hundreds of thousands of stars held together by their own gravity, packed tightest at the middle. Its stars are very old, among the oldest in our galaxy, and the Milky Way has about 150 of these clusters circling it.

Tap it and the cluster breathes: it draws in, swells out and settles, the core first and the outer stars a moment later, while a wave of sparkle runs out from the middle. Near the middle of a real cluster, the stars are packed far more tightly than the stars around the Sun.

5Sources and credits

Made in Splashery. Its code is MIT.

6Share it

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.

https://splashery.app/play/?toy=star-cluster
<script type="module" src="https://splashery.app/play/src/element.js"></script>
<splashery-toy toy="star-cluster"></splashery-toy>

7Nearby