Welcome to CryptoLights!

Here's a little explanation for what you're looking at:
You will see all live, unconfirmed transactions (except for NANO) being propagated to the net. Each transaction "meteor" will have a color and size according to its monetary value and a trail according to the amount of fees paid for it. The higher the value of the transaction, the bigger / redder the meteor. While higher fees make meteors go faster, the speed is not the actual transaction speed, because those can vary wildly between different coins. You can click on a meteor to see the transaction details behind it.

Blue bars are mined blocks that turn unconfirmed transactions into confirmed transactions.

This project is open source! A more detailed explanation (including how to set up a CryptoLights screensaver) can be found on the GitHub project.

If you like what you see, feel free to send a donation to one of the donation addresses and watch it sparkle.