Here’s a thread on yesterday’s results. There will be more soon - JWST just observed it! - so do follow along. But remember: it’s not aliens. It’s never aliens. bsky.app/profile/chri...
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PS if you’re a member of the press: I and my colleagues will happily talk about 3I/ATLAS until the (interstellar) cows come home. But my only comment on whether it’s an alien spacecraft is: Avi is talking nonsense on stilts, and doesn’t understand comets.
aug 8, 2025, 6:09 am • 122 18 • view
Thank you for this...
aug 8, 2025, 6:59 am • 5 0 • view
Excited by your detection of interstellar cows! 🐄🔭
aug 8, 2025, 1:20 pm • 0 0 • view
www.dailystar.co.uk/news/latest-...
aug 8, 2025, 1:22 pm • 3 0 • view
😝 Better watch out or someone will start reporting that there are interstellar alien cows on the comet!
aug 8, 2025, 8:54 am • 0 0 • view
If there are space cows, there will be space Starbucks and space latte's!
aug 8, 2025, 10:21 am • 0 0 • view
If we're going to talk about aliens, let's stick to the fictional kind: Arthur: [sarcastically] Normality? Right, we can talk about normality until the cows come home. Ford: [thoughtfully] What is normal? Trillian: [wistfully] What is home? Zaphod: [cluelessly] What're cows?
aug 8, 2025, 11:33 am • 1 0 • view
Why is arXiv:2508.02934 considered a relevant estimate for the nucleus size when it is based on an evidently overestimated dust production? According to arXiv:2508.00808, dust production is 0.3–4.2 kg/s, which would imply a nucleus radius of 10.6–39.6 km.
aug 8, 2025, 11:02 am • 0 0 • view
This study’s interpretation in arXiv:2508.00808 differs from the data tables. The data show a brightness change of only ~0.5 mag between July 2 and July 29. Yet, based on the same heliocentric shift, a non-active asteroid should brighten by ~0.95 mag. So the comet brightens less. How?
aug 8, 2025, 10:55 am • 0 0 • view
If you compare completely independent brightness‑variation measurements used to determine rotation, they show the same deviations which the authors interpret as error or shadowing (see arXiv:2508.00808 and arXiv:2507.21967). This is simply absurd. The object simply does not rotate.
aug 8, 2025, 10:48 am • 0 0 • view
You lack solid arguments and just spread accusations. I challenge you to explain how water sublimation occurs at 3.5 AU without CN gas. Clearly, you don’t understand comets; otherwise, this unprecedented event would have raised immediate concerns. I’ve already pointed out this before.
aug 8, 2025, 10:40 am • 0 0 • view
So so cool that JWST was able to observe it. To have them both in our skies at the same time is bullet on bullet timing in the history of our solar system.
aug 8, 2025, 7:18 am • 3 0 • view