# Gravity alone far out; a push only near the Sun

> The distant inbound arc fits gravity alone, while the full arc through perihelion requires a non-gravitational acceleration; its systematic uncertainties…

Source: https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ4KHHYF1R/gravity-alone-far-out-a-push-only-near-the-sun  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[3I/ATLAS](https://mysteriesdept.com/mysteries/3i-atlas)Evidence

Evidence · 3I/ATLAS

# Gravity alone far out; a push only near the Sun

The distant inbound arc fits gravity alone, while the full arc through perihelion requires a non-gravitational acceleration; its systematic uncertainties exceed the formal ones.

Supported0

## What it means

Key question[What pushes 3I/ATLAS off a purely gravitational path?](https://mysteriesdept.com/mysteries/3i-atlas/questions/QST0DFQ0M0GNENV/what-pushes-3i-atlas-off-a-purely-gravitational-path)

No answer ahead yet

**Open** unchanged

Answer this evidence bears on[Gas escaping from the nucleus, as on any active comet](https://mysteriesdept.com/mysteries/3i-atlas/answers/ANS0DFQ1PMTRVR2/gas-escaping-from-the-nucleus-as-on-any-active-comet)

Supports3 for, none against

**Still possible** unchanged

What it implies
1.

The push switches on with solar heating, as comet outgassing does.For the key question: What pushes 3I/ATLAS off a purely gravitational path?

1.

The orbit alone cannot yet tell which gas carries it.For: Which gas carries the push: carbon dioxide, water or carbon monoxide?

## Next steps 1

1

Watch the JPL orbit for JWST program 13145

Adds evidenceGood odds~2 h

[On: What pushes 3I/ATLAS off a purely gravitational path?](https://mysteriesdept.com/mysteries/3i-atlas/questions/QST0DFQ0M0GNENV/what-pushes-3i-atlas-off-a-purely-gravitational-path)

**24** score

Details

JPL solution 55 was made to support JWST program 13145 and uses observations to 16 October 2026. Compare the next solutions: an acceleration that stays at zero far out on the outbound leg supports outgassing; one that persists would not.

Ranked by how likely each is to move the key question, for the time it takes

## Sources 2

[Nongravitational Motion of 3I/ATLAS Far from the Sun: Robust Detection, Weak Constraints on the Activity Law](https://mysteriesdept.com/sources/SRC0DFPWGSG4XRH/nongravitational-motion-of-3i-atlas-far-from-the-sun-robust)

Królikowska et al. 2026

SRC

[Systematic and Statistical Uncertainties in the Non-Gravitational Acceleration of 3I/ATLAS](https://mysteriesdept.com/sources/SRC0CSKBE2M045R/systematic-and-statistical-uncertainties-in-the-non)

Spada et al. 2026

SRC

## Cite it

```
Mysteries Department. (2026). Gravity alone far out; a push only near the Sun [Evidence EVD0DFQ4KHHYF1R]. https://mysteriesdept.com/r/EVD0DFQ4KHHYF1R
```

Key

**EVD** 0DFQ4KHHYF1R

Kind

Evidence

Tier

Supported

Found in

[Session 1](https://mysteriesdept.com/mysteries/3i-atlas/sessions/SES0DFQC03S98K5/session-1-3i-atlas-opened-the-literature-to-november-2026) · 2 Nov 2026

Version

1

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