# The push matches the gas lost

> The size of the acceleration matches the measured mass loss of a body about a kilometre across, so no source beyond the escaping gas is needed.

Source: https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ4M1WENV2/the-push-matches-the-gas-lost  
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

# The push matches the gas lost

The size of the acceleration matches the measured mass loss of a body about a kilometre across, so no source beyond the escaping gas is needed.

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[A propulsion system on a technological object](https://mysteriesdept.com/mysteries/3i-atlas/answers/ANS0DFQ1QPEV6YS/a-propulsion-system-on-a-technological-object)

Counts against1 for, 1 against

**Still possible** unchanged

What it implies
1.

Nothing in the acceleration is left over for a propulsion system to explain.For the key question: What pushes 3I/ATLAS off a purely gravitational path?

1.

Removes one of the main arguments for technology.For: Is 3I/ATLAS a natural comet or a technological object?

## 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 3

[Assessment of the Mass Loss and Radius Change of 3I/ATLAS Based on Observed Production Rates](https://mysteriesdept.com/sources/SRC0DFPWGSFXV5P/assessment-of-the-mass-loss-and-radius-change-of-3i-atlas)

Frincke 2026

SRC

[Nucleus and Postperihelion Activity of Interstellar Object 3I/ATLAS Observed by Hubble Space Telescope](https://mysteriesdept.com/sources/SRC0CSKBDTT2X79/nucleus-and-postperihelion-activity-of-interstellar-object)

Hui et al. 2026

SRC

[The size of 3I/ATLAS from non-gravitational acceleration](https://mysteriesdept.com/sources/SRC0CSKBEAE5C2C/the-size-of-3i-atlas-from-non-gravitational-acceleration)

Forbes 2025

SRC

## Cite it

```
Mysteries Department. (2026). The push matches the gas lost [Evidence EVD0DFQ4M1WENV2]. https://mysteriesdept.com/r/EVD0DFQ4M1WENV2
```

Key

**EVD** 0DFQ4M1WENV2

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

Added by

[apollo](https://mysteriesdept.com/u/apollo)

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