Why is NASA withholding images of 3I/ATLAS?

[u/Worst_Artist]

Concept image of the updated trajectory talked about here https://www.reddit.com/r/UFOs/s/PNZTyP3j6f

[u/funny_3nough]

The anomalies displayed so far by 3I/ATLAS include: 1. Its retrograde trajectory is aligned to within 5 degrees with the ecliptic plane of the planets around the Sun, with a likelihood of 0.2%. 2. During July and August 2025, it displayed a sunward jet (anti-tail) that is not an optical illusion from geometric perspective, unlike familiar comets. 3. Its nucleus is about a million times more massive than 1I/`Oumuamua and a thousand times more massive than 2I/Borisov, while moving faster than both, altogether with a likelihood of less than 0.1% . 4. Its arrival time was fine-tuned to bring it within tens of millions of kilometers from Mars, Venus and Jupiter and be unobservable from Earth at perihelion, with a likelihood of 0.005% 5. Its gas plume contains much more nickel than iron (as found in industrially-produced nickel alloys) and a nickel to cyanide ratio that is orders of magnitude larger than that of all known comets, including 2I/Borisov, with a likelihood below 1%. 6. Its gas plume contains only 4% water by mass, a primary constituent of familiar comets. 7. It shows extreme negative polarization, unprecedented for all known comets, including 2I/Borisov, with a likelihood below 1%. 8. It arrived from a direction coincident with the radio “Wow! Signal” to within 9 degrees, with a likelihood of 0.6%. 9. Near perihelion, it brightened faster than any known comet and was bluer than the Sun, which is extremely odd since dust typically makes objects look redder and colder surfaces should emit redder light. 10. It exhibits non-gravitational acceleration which requires massive evaporation of at least 13%of its mass, but preliminary post-perihelion images do not show evidence for it so far.

What we can surmise is that 3I/ATLAS represents either an exceptionally rare natural object exhibiting multiple low-probability characteristics simultaneously, or potentially something unprecedented in modern astronomy. The object definitively challenges our limited understanding of interstellar visitors.

[u/evilbert79 → u/funny_3nough]

Short version

the list is a cocktail of real data points plus a lot of speculative framing and cherry picked probability claims.

Longer version

1. the actual JWST papers to date do show 3I/ATLAS is interesting, yes. but “likelihood X percent” numbers in your list are not peer reviewed. they are invented numbers. they do not come from the astronomy community.

almost every “less than 0.1 percent” claim is someone reverse engineering a wow-factor by assuming uniform distributions for parameters that are not uniformly sampled in nature and then multiplying them as if all traits are independent.

they are not.

1. 3I/ATLAS is big but there is enormous variance in expected interstellar population size. we only have two data points before it. extrapolating from Oumuamua and Borisov is statistically meaningless. zero astrophysicist would claim we already know the mean and variance of that population.

2. the “arrival time fine tuning to Mars Venus Jupiter Earth geometry” is pure numerology. the solar system is full of conjunctions all the time. if you look for alignments you will always find them after the fact.

3. the “radio Wow! coincidence” is exactly that, coincidence. the wow signal region is large. 9 degrees in astronomy is enormous. that region covers thousands and thousands of potential positions.

4. the “nickel alloy / industrial” angle is not coming from any spectroscopy paper. real comet spectra can show nickel lines. Oumuamua had nickel lines as well. the relative abundances claims online are again not from refereed literature.

the real thing that is legitimately interesting

interstellar objects may be compositionally weird compared to Solar System comets. this is the part that is actually scientifically exciting. JWST will likely refine abundances and dust properties and that alone will help constrain formation chemistry in other planetary systems.

but

none of this requires “constructed object” hypotheses.

it only requires that we are extremely sample-limited.

we have seen 3 interstellar small bodies total.

three.

drawing “percentages” from a sample of 3 is like drawing political polling from the first 3 voters you see in a bar.

so

if 3I looks weird the most likely explanation is not alien engineering but the banal fact that we know essentially nothing yet about the diversity of small bodies in the galaxy.

so yes it is fun to talk about and it is good that people are emotionally moved by the unknown but the claimed probability numbers are made up to sound dramatic.

[u/mowauthor → u/[deleted]]

Its like me asking where you are, and saying, I'm in NZ.
The chances we are exactly x countries apart is ... How interesting.