It seems like you're referring to Snapchat planets order & meaning, a feature within Snapchat’s Friend Solar System that ranks friends based on how frequently they interact with each other. This system is part of the Snapchat+ subscription service.
Snapchat assigns your friends a planet from the solar system depending on your closeness to them. The closer the planet is to the sun, the more interaction you have with that friend. The order follows the actual solar system planets, which are:
Mercury – Closest friend, highest interaction.
Venus – Second closest friend.
Earth – Third closest friend.
Mars – Fourth closest friend.
Jupiter – Fifth closest friend.
Saturn – Sixth closest friend.
Uranus – Seventh closest friend.
Neptune – Eighth closest friend.
Each planet represents a different level of interaction, and this playful feature adds a visual representation of friendship ranking on Snapchat.