UPDATE: 3I/ATLAS Shows Non-Gravitational Acceleration at Perihelion
Now with bonus blue glow and unexplained brightening
It’s happening.
As of 29 October, the object known as 3I/ATLAS has officially demonstrated a non gravitational acceleration, a key marker in the "maybe-not-a-rock" column.
According to a report from Davide Farnocchia (NASA JPL), confirmed by Harvard’s Avi Loeb, 3I/ATLAS experienced:
- A radial push away from the Sun of 135 km/day²
- A transverse nudge of 60 km/day²
To put that in plain language: it moved through space, instead of just falling. Like something with intent… or at least propulsion.
If it’s a comet, the numbers imply that it should be consuming huge amounts of mass, something on the order of 10% in the coming weeks. That would be a big visible gas plume. ESA’s JUICE spacecraft should be the first to detect it in early November, and Earth-based telescopes (plus Hubble and JWST) will get a close look on 19 December.
But there's more: it's glowing blue.
Normal comets redden from dust and cold. But this thing got bluer than the Sun during perihelion.
Possible explanations:
- Ionized carbon monoxide (natural, but rare)
- Artificial light or a hot engine (Loeb’s words)
This would be anomaly #9 on the list of weirdness. The full list includes impossible alignments, stealth-friendly orbits, lack of coma, and optimal braking positions cloaked by the Sun.
Loeb ends with a warning to his peers:
“It is bad practice for astrophysicists to conclude the data must be wrong just because they have no theoretical explanation”