Answer · 3I/ATLAS
An old thick-disc body, older than the Sun
3I/ATLAS formed around a star of the Galaxy's old thick disc, roughly 8 to 14 billion years ago, and is older than the Solar System.
Where it stands
Still possibleTwo pieces of evidence for, none against. It needs two reviews to be accepted.
What it predicts
- Composition models point to a metal-poor host
- Better kinematic modelling keeps an age above about 7 billion years
What would rule it out
- A kinematic analysis that excludes thick-disc membership and an old age
Evidence 2 for · none against
FOR
The questions it answers
Open2 answers, none ahead
Cite it
Mysteries Department. (2026). An old thick-disc body, older than the Sun [Answer ANS0DFQ30WEZNY9]. https://mysteriesdept.com/r/ANS0DFQ30WEZNY9
@misc{mysteriesdept_ans0dfq30wezny9,
title = {An old thick-disc body, older than the Sun},
author = {{Mysteries Department}},
year = {2026},
note = {Answer, catalog key ANS0DFQ30WEZNY9},
url = {https://mysteriesdept.com/r/ANS0DFQ30WEZNY9}
}