Guess the answer for this rebus (game rules below).

EDIT: The contest is over and no one guessed the official answer. The solution is explained in detail here. Thanks to everyone who spent some time trying to solve this puzzle!

Game rules:

• The first person to find the official answer is the winner.
• The winner receives 50% SBD from this post (or 0.75 SBD if the 50% would be less than that)
• After 24 hours from the publishing of this post, the game ends and if no one guessed the answer, the prize will be unavailable - you can still guess for fun or click the link that I'll provide to see the answer
• Resteem this post before its first payout to receive 0.02 SBD - let me know in the comments that you reposted!
• Good efforts may be rewarded with a special prize
• Alternative solutions are appreciated and may be rewarded with a special prize, but the official answer is required to become a winner

EDIT - Some clues to help you going:

1. The official answer doesn't contain any form of the word bubble or soda.
2. Some knowledge about the International System of Units could help here.
3. A lot of your answers contain the word "stars", but the official answer comes from another name of this shape - the name that's often used in the context of geometry.

Read my post What is rebus? - examples that won't hurt you (no more) to learn about rebus puzzles and how to solve them.

Good luck and have fun! 👍

Follow me to be sure that you won't miss my next contest!

My other posts you might be interested in:

• The solution of Rebus [ENG] #4
• My favorite gifts - Birthday Post part 2: Getting old 😉
• The Sides of Life - original art