# Lisse 2026: SPHEREx Re-Observation of Interstellar Object 3I/ATLAS in December 2025

> C. M. Lisse, Y. P. Bach, S. A. Bryan, 2026. 2 records on Mysteries Department cite it. Lisse, C., Bach, Y., Bryan, S. et al. 2026. SPHEREx Re-Observation…

Source: https://mysteriesdept.com/sources/SRC0DFPWGSFNBN2/spherex-re-observation-of-interstellar-object-3i-atlas-in  
Publisher: Mysteries Department  
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[Sources](https://mysteriesdept.com/sources)[3I/ATLAS](https://mysteriesdept.com/mysteries/3i-atlas)Lisse 2026

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# SPHEREx Re-Observation of Interstellar Object 3I/ATLAS in December 2025

C. M. Lisse, Y. P. Bach, S. A. Bryan, 2026. _arXiv_.

Dec 2025: much more active; H2O gas emission 40x brighter; water-ice absorption mostly gone; new CN, organic C-H, CO features.

**3I/ATLAS** Preprint0

## Cited by on this site 2 records

[Water took over near perihelion; the ice band vanished](https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ54QY5WR5/water-took-over-near-perihelion-the-ice-band-vanished)

Evidence

EVD

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

The mystery article

MYS

## Cite it

```
Lisse, C. M., Bach, Y. P., & Bryan, S. A. (2026). SPHEREx Re-Observation of Interstellar Object 3I/ATLAS in December 2025. arXiv. https://arxiv.org/abs/2601.06759
```

[Read it free at arxiv.org](https://arxiv.org/abs/2601.06759)

Key

**SRC** 0DFPWGSFNBN2

Kind

Preprint

Rights

arXiv-nonexclusive

Kept

2 Nov 2026, for editors

Added by

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

The record

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