The video celebrates the channel reaching 500,000 subscribers. The host, Professor Chris, performs an experiment with water bombs, also known as "orbs" or "hobbies," which expand when exposed to water. The goal is to see how large they can grow and to break a record. The experiment involves filling the water bombs with water and slime, and then using a trampoline to propel them into the air. The host also uses a hose to fill the water bombs and creates a "depth charge" to make them swell. The experiment is conducted over two days, and the host eventually jumps on the largest water bomb, causing it to break and release a large amount of water. The video ends with a call to action, encouraging viewers to subscribe to the channel and watch future experiments.
Here are the key facts extracted from the text:
1. The YouTube channel has reached 500,000 subscribers.
2. The channel's next goal is to reach 1 million subscribers.
3. There are different types of water bombs, including big, transparent, blue, silver, indestructible, and slime-filled ones.
4. The water bombs become huge and colorful when they get in contact with water.
5. A giant water bomb is filled with 150,000 euros worth of material.
6. The water bomb is filled with slime to make it bigger.
7. The channel's host is trying to push the water bomb as high as possible, with a goal of reaching 45 meters.
8. The host is using a trampoline to launch the water bomb.
9. The channel's team has prepared a few depth charges to make the water bomb swell until the next day.
10. The host is doing a second attempt to launch the water bomb.
11. The water bomb has broken, but the host is still excited about the experiment.
12. The channel's team has set up a large water bomb filled with hobbies, which is the final experiment.
13. The host is jumping out of a trampoline to launch the final water bomb.
14. The channel's team is encouraging viewers to subscribe and watch their next video.