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The Origin of Oumuamua

rjh01 said:
I suggest one visits the solar system every few years. They may have only just started looking for them.
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It's probably much more often than that. It's just that most have passed through unnoticed.

Norris pointed to modeling estimating that there could be as many as 10,000 interstellar objects drifting through the Solar System at any given time, though most would be smaller than the newly discovered object.
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Puppycow said:
New interstellar object sighting:
www.sciencealert.com

It's Official: NASA Confirms New Interstellar Object Is Zooming Through Solar System

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System – only the third ever spotted, though scientists suspect many more may slip past unnoticed.
www.sciencealert.com www.sciencealert.com
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The Oumuamua trajectory deflected quite a bit due to its passage through the solar system, whereas this one looks like the deflection is really small. I thought at first maybe this meant that this one's going faster than Oumuamua, but that's only part of it. Oumuamua was going around 30 km/s at 10 AU distance, accelerating to about 50 km/s at 1 AU. This new one is going around 58 km/s at 4.5 AU, so definitely faster but not twice as fast. But it's also not getting as close to the sun. Oumuamua got inside the orbit of Mercury, whereas the closest this one is getting is between the orbit of Earth and Mars. That's a lot more than twice the distance away from the sun. The further distance has more to do with the lower deflection than the higher speed.
 
This one is the alien cops, chasing the alien teenagers who were driving the last one.

(They live and think on a different time-scale to us.)

We can't hear the sirens, because, space.

:P
 
Some people just won't give up.

www.newsweek.com

Harvard physicist claims new interstellar comet is alien probe

"The consequences, should the hypothesis turn out to be correct, could potentially be dire for humanity," said Avi Loeb.
www.newsweek.com www.newsweek.com

An unexpected visitor to our solar system spotted earlier this month might be a piece of alien technology—that is, according to one professor from Harvard University.

3I/ATLAS—which is only the third known interstellar object ever recorded—was detected on July 1 by NASA's ATLAS telescope in Chile.

Despite being officially classified as a comet, theoretical physicist professor Avi Loeb of Harvard University, has argued that the object could have been sent by an alien civilization.

Loeb explained that the object's trajectory, size and behavior suggest it could be something far more advanced than a natural occurrence—and could instead be some form of alien craft or probe.

"The retrograde orbital plane of 3I/ATLAS around the Sun lies within 5 degrees of that of Earth... The likelihood for that coincidence out of all random orientations is 0.2 percent," Loeb told Newsweek.

Despite this, other scientists are skeptical of Loeb's claims. Richard Moissl, Head of Planetary Defence at the European Space Agency told Newsweek: "There have been no signs pointing to non-natural origins of 3I/ATLAS in the available observations."
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futurism.com

Scientists Just Found Something Very Weird About the Mysterious Object Hurtling Into Our Solar System

Harvard astronomer and alien hunter Avi Loeb is still holding onto hope that interstellar object 3I/ATLAS was sent to us by extraterrestrials.
futurism.com futurism.com

It's a click-baity headline but it reports more recent developments.
They haven't yet seen a tail, but that's "likely due to viewing geometry and low dust production".
Then there's what Loeb is saying:
Loeb has also suggested that 3I/ATLAS' highly unusual trajectory is "fine-tuned to get unusually close to Jupiter, Mars and Venus," an exceedingly improbable path.
Loeb and his colleagues have also posited that the object's large size — roughly 12.4 miles in diameter, according to his calculations — makes it an immensely rare, once-in-only-10,000-years encounter.
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He also invented his own "scale" for categorizing interstellar objects on a scale from one (likely natural) to ten (confirmed aliens) and claims that the object is a 6 on his scale.
 
Puppycow said:
futurism.com

Scientists Just Found Something Very Weird About the Mysterious Object Hurtling Into Our Solar System

Harvard astronomer and alien hunter Avi Loeb is still holding onto hope that interstellar object 3I/ATLAS was sent to us by extraterrestrials.
futurism.com futurism.com

It's a click-baity headline but it reports more recent developments.
They haven't yet seen a tail, but that's "likely due to viewing geometry and low dust production".
Then there's what Loeb is saying:

He also invented his own "scale" for categorizing interstellar objects on a scale from one (likely natural) to ten (confirmed aliens) and claims that the object is a 6 on his scale.
Click to expand...
I already posted this in another thread, but here's a Scott Manley video, including a debunking of Loeb's ridiculous probability claim.
 
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