There is a feature on Snapchat that assigns your friends as planets. Mercury is your closest contact. Neptune sits furthest out at position eight. The feature is called the Friend Solar System, and it is exclusive to Snapchat+ subscribers. Most users discover it when they tap a badge on a friend’s profile. They find out they are someone’s Earth when they expected to be Mercury.
That moment of discovery is the starting point for a much larger conversation about psychology.
What ranking systems do to the brain
Social comparison is not a choice. It is a cognitive reflex. Leon Festinger established this in 1954. He demonstrated that humans automatically evaluate their own worth by comparing themselves to others. We cannot turn this process off. We can only change what we compare ourselves to.
For most of human history, the comparisons available to us were limited by our physical environment. You compared yourself to the people you could actually see. Social hierarchies existed but they were local, informal, and rarely reduced to a single visible number.
Digital platforms changed that. The number of followers, the number of likes, the speed at which someone replies. These became legible signals of social standing. Not just observable feelings but measurable data points. And measurable data points create a specific psychological problem: they are harder to dismiss than feelings.
When a friend seems less interested lately, you can attribute it to their busy week. Their mood. Their distraction. When an app shows you a number (position seven out of eight) the ambiguity disappears. The interpretation is right there in the interface. Seven. Not three. Not one. Seven.
The specific thing snapchat built
Snapchat planets take this dynamic to a precise and personal level. The feature is not a public leaderboard. It is a private one-to-one ranking. Tap a friend’s badge and see that you are their Saturn. The comparison is not against strangers or celebrities. You are being compared to seven specific people who interacted with them more than you did this week.
That specificity is what gives the feature its psychological weight. A generic metric like total followers or an overall activity score can be rationalised away. This one cannot. You know whose orbit you fell behind. You may even know who moved ahead of you.
Snapchat launched the Friend Solar System in 2022 as part of its Snapchat+ paid subscription tier. By mid-2026, Snapchat+ had grown into a billion-dollar annual revenue product. Subscription income rose 85% year over year in Q2 2026 alone. Tens of millions of users now have access to this ranking system and interact with it regularly.
Why position matters more than logic says it should
We understand intellectually that a planet ranking reflects recent app activity. Not genuine care, not loyalty, not the quality of a friendship built over years. We still respond to it emotionally. Understanding why helps explain what the research shows.
Social exclusion pain is well-documented in neuroscience. Being left out or ranked lower than expected activates the anterior cingulate cortex. This is the same brain region involved in processing physical pain. This is not metaphorical. The discomfort of social rejection has a measurable neurological signature.
A planet ranking does not constitute social rejection. But it presents the brain with data that pattern-matches to social exclusion. Position eight. Furthest out. Least active. The brain processes these signals before the rational mind has time to contextualise them.
This is compounded by what psychologists call the spotlight effect. That is the tendency to overestimate how much others notice and evaluate us. Knowing that a friend can tap a badge and see exactly what position you occupy amplifies the spotlight effect. You become aware that the data exists, even when it is not being looked at.
The Snapchat planets in order run from Mercury at position one through Neptune at position eight. This ordinal structure reveals something important about how the feature is designed. Each step further from the centre carries a clear social implication. There is no ambiguity about what position seven means relative to position two. The ordinal structure makes comparison inevitable and interpretation automatic.
What the research on teens tells us
Pew Research Center data from 2025 found that 25% of teen girls say social media hurt their mental health. The figure for teen boys was 14%. Twenty percent of teen girls said it hurt their confidence, compared to 10% of boys. These figures do not point to passive exposure as the mechanism. They point to the active social comparison processes that platforms facilitate.
In 2023, The Wall Street Journal reported on the emotional impact of the Snapchat Friend Solar System specifically. The publication documented the experience of Callie Schietinger, a 15-year-old from New York. She discovered that a male friend ranked above her in her boyfriend’s solar system. She was Neptune. He was higher. The discovery caused a real argument and real distress.
The Journal found this pattern across multiple teenage relationships. Planet positions were being treated as verdicts on the quality of friendships, not as reflections of recent app activity.
Snap took this seriously. The company issued a public statement. It acknowledged the feature could feel rewarding when users ranked high and equally painful when they did not. More significantly, Snap switched the Friend Solar System from on-by-default to an opt-in feature in April 2024. Every new Snapchat+ subscriber now has to manually enable it in settings. The feature exists, but users choose whether to participate.
That product decision is its own data point. The company that built the feature concluded its default visibility created measurable harm for many of its users.
The asymmetry problem
One of the most psychologically significant design elements of the Friend Solar System is its asymmetric structure. Each user’s solar system is calculated independently. You can be someone’s Mercury while they sit at your Jupiter. The two rankings use the same interaction data but measure from different perspectives and produce different results.
This asymmetry removes a social safety net that most friendship dynamics rely on. When you sense that a friendship is unbalanced, the feeling is normally private and uncertain. You might be wrong. You might be misreading signals. The ambiguity provides emotional protection.
The Friend Solar System removes that protection. If you have both tapped each other’s badges, the data is clear. You know your planet in their system. They know theirs in yours. The imbalance, if it exists, is documented.
For adults with developed frameworks for understanding relationship complexity, this information might be manageable. For a 14-year-old who interprets proximity as care and distance as rejection, it can feel like evidence of something serious.
What this tells us about platform design
The Snapchat planets story is not unique to one feature or one company. It is an example of a broader pattern. Behavioural data is collected and then made visible. The visibility creates the psychological effect.
Likes, follower counts, response times, read receipts, streak numbers. These are all forms of behavioural data that platforms make legible. Each one activates social comparison. The Friend Solar System is simply more explicit than most. It takes the data that was already being collected and displays it as a ranked numerical hierarchy.
The research on social comparison suggests the harm is not in the data itself. It is in the visibility and specificity. Vague awareness that a friendship might be uneven is cognitively different from a number that quantifies the imbalance precisely.
For platform designers, psychologists, and parents, the Snapchat case offers a clear lesson. Making social ranking systems opt-in rather than opt-out is not just a user experience decision. It is a mental health decision. Choosing whether to participate in a visible ranking system is meaningfully different from having it imposed by default.
The technology that shows us where we stand in someone else’s social orbit is not going away. Understanding its psychological mechanisms is the first step toward using it on our own terms.
Zuella Montemayor, a psychology graduate from the University of Hertfordshire, has a keen interest in the fields of mental health, wellness, and lifestyle.
