Comet redux

Okay, can we all please please puhleeeeeez stop posting stuff without checking to see if it's true?

I know it's a pain in the ass, but this needs to become a habit.  For all of us.  Unless you make a practice of never reposting anything anywhere -- which eliminates most people -- it's got to become an automatic reflex when you're using social media.  Stop before you hit "forward" or "share" or whatnot and take five minutes to verify that it's accurate.

The reason this comes up is something about comet 3I-ATLAS that I've now seen posted four times.  I wrote about 3I-ATLAS here only a couple of weeks ago, and to cut to the chase: the considered opinions of the astronomers who have studied it -- i.e., the people who actually know what the hell they're talking about -- are that the object is an interstellar comet made mostly of frozen carbon dioxide.  Despite the claims of people like Avi Loeb, the alien-happy Harvard astronomer, it shows no sign of being an extraterrestrial spacecraft.

That, of course, isn't sufficient for a lot of people.  Without further ado, here's the image I've seen repeatedly posted:

There is nothing in this image that is accurate, unless you're counting "3I-ATLAS is an interstellar object" and "Japan has a space agency" as being in the "correct" column.  Japan's space agency has released no such "footage."  There are no "precise pulsating lights."  No scientist -- again, with the exception of Loeb and his pals -- are "questioning if it's artificial."

And the object in the image?  That's not 3I-ATLAS.  Jack Gilbert, of the Scripps Institute of Oceanography, has identified it as a microorganism.  "That is a paramecium," Gilbert writes.  "Freshwater I believe -- although better phase contrast, and where it was found, would be ideal for better identification."

Another image that is making the rounds is from NASA, but it's being used to claim that the 3I-ATLAS has changed direction and speed in a fashion that "indicates some kind of propulsion system."  This shift in trajectory, they say, made the telescope at NOIRLab (National Optical-Infrared Astronomy Research Laboratory) image alter its aim to keep up with it, resulting in the background stars showing rainbow-colored streaks:

This isn't correct, either.  If you go to NOIRLab's website, you find a perfectly reasonable explanation of the streaks right there, without any reference to propulsion systems and alien spacecraft.  I quote:

Comet 3I/ATLAS streaks across a dense star field in this image captured by the Gemini Multi-Object Spectrograph (GMOS) on Gemini South at Cerro Pachón in Chile, one half of the International Gemini Observatory, partly funded by the U.S. National Science Foundation (NSF) and operated by NSF NOIRLab.  This image is composed of exposures taken through four filters -- red, green, blue and ultraviolet.  As exposures are taken, the comet remains fixed in the center of the telescope's field of view.  However, the positions of the background stars change relative to the comet, causing them to appear as colorful streaks in the final image.

Once again, the upshot: 3I-ATLAS is a comet.  That's all.  Of great interest to planetary astronomers, but likely to be forgotten by just about everyone else after March of next year, at which point it will be zooming past Jupiter and heading back out into the depths of space, never to be seen again.  There is no credible evidence it's a spaceship.  If there was, believe me, you would not be able to get the astronomers to shut up about it.  The concept some people have of scientists keeping stuff hidden because they're just that secretive, and don't want anyone to know about their big discoveries, only indicates to me that these people know exactly zero scientists.  Trust me on this.  I know some actual scientists, and every single one of them loves nothing better than telling you at length about what they're working on, even if it's something that would interest 0.00000001% of the humans who have ever lived, such as the mating habits of trench-dwelling tube worms.  If there was strong (or, honestly, any) observation that supported this thing being the ship from Rendezvous With Rama, we'd all know about it.

And after all, if there was evidence out there, the hoaxers wouldn't have to use a photograph of a paramecium to support their bogus claims.

So for fuck's sake, please be careful about what you post.  It took me (literally) thirty seconds to find a site debunking the "Japan space agency" thing.  What I'm asking you to do is usually not in any way onerous.

I mean, really; wouldn't you rather be posting things that are cool, and also true?  I mean, there is so much real science to be fascinated and astonished by, you don't need these crazy claims.

And believe me, neither does the internet as a whole.

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