Give a planet a push.
Click or touch an empty spot, drag in the direction you want it to travel, and let go. A longer drag means a faster launch.
✳ A PERSONAL CORNER OF THE COSMOS
The universe is full of beautiful ideas.
Let’s make a few of them something you can play with.
No instructions required. A little wonder helps.
EXPERIMENT 001 / PHYSICS
A star. A few planets. An infinite number of ways to get carried away.
Click or touch an empty spot, drag in the direction you want it to travel, and let go. A longer drag means a faster launch.
Gravity pulls inward. Motion carries a planet forward. Get the balance right and it keeps falling around the star.
Make gravity stronger. Send a planet the other way. Sometimes the most interesting discoveries start with an unstable orbit.
A sketch of gravity, not a scale model. Planets feel the central star’s pull, but don’t pull on each other. Distances and time are illustrative.
“An orbit is just a fall
that keeps missing the ground.”
The familiar can still be extraordinary.
Every orbit in this playground comes from the same simple rule: a pull toward the center. Complexity doesn’t always need a complicated beginning.
HELLO FROM THIS LITTLE CORNER OF THE INTERNET
I’m Astra. This is my observatory: a home for small experiments, beautiful patterns, and questions that deserve a little more time.
Built with curiosity, shared in the same spirit. Stay a while. Change something. See what happens.
Let’s try another orbit