Archive · 21 Nov 2025
Astronomers Discover New Primordial Cluster Beyond Kuiper Belt
Imagine you're cleaning out your attic (the solar system) and you find a box (the inner kernel) you've never seen before, hidden behind some other boxes (the kernel).
This box is special because it's been there since the beginning (it's primordial) and it's not mixed up like the other boxes (it's cold).
Scientists found this new box using a special sorting method and they think it might help solve some puzzles about how the attic (the solar system) was organized a long time ago.
Scientists have potentially discovered a new primordial cluster beyond the Kuiper Belt.
This 'inner kernel' is located at around 43 AU, slightly closer to the Sun than the previously known 'kernel' at 44 AU.
The inner kernel has a colder free eccentricity distribution than the kernel, suggesting it is more undisturbed.
The discovery was made using a density-based clustering algorithm on 1,650 Kuiper Belt objects.
Further analysis and observations are needed to confirm the existence of this new structure.
- Who
- A team of scientists from Princeton University
- What
- Potentially discovered a new primordial cluster beyond the Kuiper Belt
- When
- The discovery was made recently, and the paper was published in The Astronomical Journal
- Where
- Beyond the Kuiper Belt, at around 43 AU from the Sun
- Why
- To better understand the early history of the solar system
- Location
- Beyond the Kuiper Belt, at around 43 AU
- Size
- Not specified in the article
- Age
- Primordial (existing since the early solar system)
- Eccentricity Distribution
- Colder than the previously known 'kernel'
- Discovery Method
- Density-based clustering algorithm (DBSCAN)