The object now known as 3I/ATLAS is the third confirmed interstellar visitor to enter our solar system. It’s clocking 37 miles per second, older than the Sun, and possibly 7 billion years old. Initial size estimates were off. It’s not 1 mile wide. It’s closer to 7. Some say 12. Others say 20. The Vera Rubin Observatory caught it first. NASA confirmed it July 2. It’s moving too fast to stay. By October it’ll swing past the Sun and vanish.
- 3I/ATLAS is traveling at 152,000 miles per hour. That’s 245,000 kilometers per hour. Speed like that doesn’t orbit. It escapes.
- The object’s trajectory is hyperbolic with an eccentricity of 6.2. That’s not a comet loop. That’s a galactic drive-by.
- Closest approach to the Sun will be October 29. Closest to Earth will be December 19. No threat. Just a reminder that space doesn’t care.
- Estimated size ranges from 7 to 12 miles wide. Some say up to 20. That’s Manhattan-sized. But no one agrees on the zip code.
- Composition includes silicates, carbon-based minerals, and organic molecules. So it’s not alien tech. Just alien dirt.
- Harvard’s Avi Loeb flagged it as a possible probe. Again. If you keep calling every rock a spaceship, eventually one might answer.
- Rubin Observatory caught it on June 21. ATLAS confirmed it July 1. Rubin’s camera is 3.2 gigapixels. That’s not a telescope. That’s surveillance.
- It will pass 18 million miles from Mars. Close enough for a selfie. Too far for a handshake.
- It’s the largest interstellar object ever recorded. Bigger than ‘Oumuamua. Bigger than Borisov. Bigger than the hype.
They call it a comet. But it’s not behaving like one. No tail. No plume. No gas signature. Just brightness. That’s why Loeb’s back with the alien probe theory. But the real story isn’t the object. It’s the budget. Rubin Observatory cost $473 million. ATLAS runs on NSF grants. Loeb’s paper is self-published. Everyone’s chasing the same rock for different reasons. The science says comet. The headlines say threat. The funding says keep looking.
https://earthsky.org/space/new-interstellar-object-candidate-heading-toward-the-sun-a11pl3z/
