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Reconstructing what the article appears to be saying: 1. a catalog of government sensor data on meteorite strikes was discovered 2. based on the data, those s
by yuan43 4y ago
Reconstructing what the article appears to be saying:
1. a catalog of government sensor data on meteorite strikes was discovered
2. based on the data, those strikes that could have originate outside of the solar system were gathered
3. one hit in particular appears to be harder than iron based on its speed and loss
Then:
> Despite the government releasing limited data due to national security concerns - he had discovered something groundbreaking. A paper he wrote with his student laid out what he believed to be true. But three years after writing his findings, a major development confirmed what he knew all along.
Great, let's find that paper and see what's up. Wait, where's the link? No matter, just tell me the journal and I'll find it. Nope. Ah, that's right, this is the popular media where such things simply aren't done.
- linkdink 4y agoTo be fair, if you're not going to Google it, you're probably more of a popular media reader anyway. There are no pictures in the paper to look at. https://arxiv.org/abs/1904.07224 https://arxiv.org/abs/1904.07224
- yuan43 4y agoDid google and didn't find it. Maybe my Google fu just isn't as advanced as yours. Then again, why not just include the link? It turns out the key here is to use "Abraham" not "Avi" in the search. The latter returns crapola and the former yields your link a few hits down. Don't worry about lack of pictures (there actually are some figures), I'm pretty good at this English thing. Turns out the object was quite small: > Given the impact speed of the meteor, ∼ 44.8 km s−1, and the total impact energy, 4.6 × 1018 ergs, the meteor mass was approximately 4.6 × 105 g. Assuming bulk density values of 1.7 g/cm3 and 0.9 g/cm3 for Type II and Type IIIa objects respectively, we obtain a radius, R, of 0.4m – 0.5m for a spherical geometry (Ceplecha 1988; Palotai et al. 2018). The small size of the object was something the article didn't address.
- worldvoyageur 4y agohttps://ui.adsabs.harvard.edu/abs/2019arXiv190407224S/abstract https://ui.adsabs.harvard.edu/abs/2019arXiv190407224S/abstra... The payload: " Based on the CNEOS catalog of bolide events, we identify the ∼0.45m meteor detected at 2014-01-08 17:05:34 UTC as originating from an unbound hyperbolic orbit with 99.999\% confidence. The U.S. Department of Defense has since verified that "the velocity estimate reported to NASA is sufficiently accurate to indicate an interstellar trajectory... Its high LSR speed implies a possible origin from the deep interior of a planetary system or a star in the thick disk of the Milky Way galaxy." "
- wonderwonder 4y agohmm, that is a very little meteor. Good luck to the guy would be awesome if he found it but thats going to be tough.
- Sporktacular 4y agoIt's not just the orbit that's unbound and hyperbolic.
- nabakin 4y agoI wonder how many meteors were detected in that data. Are we talking a few hundred or hundreds of thousands? That would make a failure with 99.999% confidence more likely