Fossil of dinosaur killed in asteroid strike found, scientists claim
bbc.com
bbc.com
[0] https://en.wikipedia.org/wiki/Tanis_(fossil_site)
But of course an asteroid strike may create very favorable conditions for fossilization.
The hypothesis is that it was formed from the rapid drainage of a flooded plain, and that the flood was probably caused by the Chicxulub event.
If you're going to answer "parsimony", what if these events aren't independent?
(I'm not a paleontologist)
The collision of comet Shoemaker-Levy with Jupiter occurred as several distinct impacts, due to gravitational disruption of the comet in a previous close encounter with the planet. Something similar is clearly possible on Earth (perhaps even gravitational dispersion of a comet passing close to the Moon just before impact?) but the Chicxulub crater is large enough to explain the extinction event by itself (unless you hew to the volcanic explanation, I suppose), so the question is whether there is any evidence for multiple impacts. As far as I know, the global distribution of the physical evidence is indicative of a single source, but not definitively so.
Shoemaker-Levy orbited Jupiter for quite a while before it broke up and went in.
On a long enough timeline, improbable events are expected.
Pretty heavy stuff for a comedy sitcom.
"Dinosaurs: The Final Day with Sir David Attenborough will be broadcast on BBC One on 15 April at 18:30 BST. A version has been made for the US science series Nova on the PBS network to be broadcast later in the year."
say no more.
It says "MAY 11, 2022 AT 10PM". Presumably that's EST or EDT.
Cretaceous–Paleogene extinction event (C-P or also K-Pg event) https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_e... :
> A wide range of species perished in the K–Pg extinction, the best-known being the non-avian dinosaurs. It also destroyed myriad other terrestrial organisms, including some mammals, birds,[21] lizards,[22] insects,[23][24] plants, and all the pterosaurs.[25] In the oceans, the K–Pg extinction killed off plesiosaurs and mosasaurs and devastated teleost fish,[26] sharks, mollusks (especially ammonites, which became extinct), and many species of plankton. It is estimated that 75% or more of all species on Earth vanished.[27] Yet the extinction also provided evolutionary opportunities: in its wake, many groups underwent remarkable adaptive radiation—sudden and prolific divergence into new forms and species within the disrupted and emptied ecological niches. Mammals in particular diversified in the Paleogene,[28] evolving new forms such as horses, whales, bats, and primates. The surviving group of dinosaurs were avians, ground and water fowl who radiated into all modern species of bird.[29] Teleost fish,[30] and perhaps lizards[22] also radiated.
https://en.wikipedia.org/wiki/Near-Earth_object :
> A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (perihelion) is less than 1.3 astronomical units (AU).[2] If a NEO's orbit crosses the Earth's, and the object is larger than 140 meters (460 ft) across, it is considered a potentially hazardous object (PHO).[3] Most known PHOs and NEOs are asteroids, but a small fraction are comets. [1]
Asteroid impact avoidance https://en.wikipedia.org/wiki/Asteroid_impact_avoidance :
> In 2016, a NASA scientist warned that the Earth is unprepared for such an event.[3] In April 2018, the B612 Foundation reported "It's 100 percent certain we'll be hit by a devastating asteroid, but we're not 100 percent sure when."[4] Also in 2018, physicist Stephen Hawking, in his final book, Brief Answers to the Big Questions, considered an asteroid collision to be the biggest threat to the planet. [5][6][7] Several ways of avoiding an asteroid impact have been described.[8] Nonetheless, in March 2019, scientists reported that asteroids may be much more difficult to destroy than thought earlier.[9][10] In addition, an asteroid may reassemble itself due to gravity after being disrupted.[11] In May 2021, NASA astronomers reported that 5 to 10 years of preparation may be needed to avoid a virtual impactor based on a simulated exercise conducted by the 2021 Planetary Defense Conference. [12][13][14]
- Nkalakatha the "#megamaser" (2022) https://www.sciencealert.com/extreme-megamaser-discovered-sh... ... (Can we harvest or collect and point - or pull against - such energy sources which are already present, using a minimum pertubative force in n-body idk QFT+QG fields in order to effectively read and write to points in stochastic spacetime, which is presumably all embedded in the horizon disc of one or more microscopic and larger black holes?)
Can a train of multiple solar collector + sails + lasers exceed (c + nlimit_approaching_c, or does that warp spacetime for NEOs, over their net effective path through spacetime?
- A QG Quantum Gravity duality for idk Gravitational lensing > Explanation in terms of spacetime curvature: https://en.wikipedia.org/wiki/Gravitational_lens
Claimed moons of Earth https://en.wikipedia.org/wiki/Claimed_moons_of_Earth
> Although the Moon is Earth's only natural satellite, there are a number of near-Earth objects (NEOs) with orbits that are in resonance with Earth. These have been called "second" moons of Earth. [3]*
> 469219 Kamoʻoalewa, an asteroid discovered on 27 April 2016, is possibly the most stable quasi-satellite of Earth.[4] As it orbits the Sun, 469219 Kamoʻoalewa appears to circle around Earth as well. It is too distant to be a true satellite of Earth, but is the best and most stable example of a quasi-satellite, a type of near-Earth object. They appear to orbit a point other than Earth itself, such as the orbital path of the NEO asteroid 3753 Cruithne. Earth trojans, such as 2010 TK7, are NEOs that orbit the Sun (not Earth) on the same orbital path as Earth, and appear to lead or follow Earth along the same orbital path.
> Other small natural objects in orbit around the Sun may enter orbit around Earth for a short amount of time, becoming temporary natural satellites. As of 2020, the only confirmed examples have been 2006 RH120 in Earth orbit during 2006 and 2007,[1] and 2020 CD3 in Earth orbit between 2018 and 2020. [5][6]
ʻOumuamua from ~Vega (2017)?: https://en.wikipedia.org/wiki/%CA%BBOumuamua
My understanding is, per an article in The Atlantic (and others I'm sure) a couple+ years ago, the modern theory is that excessive worldwide volcanic activity was already killing the dinosaurs for many years, the asteroid was simply the final death blow.
The fact that finding dinosaurs in the asteroid time frame seems to led support to the modern theory. That is, you can't find what wasn't there. The dino numbers were already significantly minimized.
Sidebar: The bonus I found in The Atlantic article is it got into the politics and (dare I say) close-mindedness of that "industry." For tbose fond of "trust the science" this article adds a darkside to that slogan.
https://www.theatlantic.com/magazine/archive/2018/09/dinosau...
There is no good evidence of this. Also, Keller is viewed as fringe, I believe.
Well, gee, I thought the ravings of crazy uncle Bob made it to BBC! Of course scientists claim. To quote George Carlin:
> News people like to say “police have responded to an emergency situation.” No they haven’t, they’ve responded to an emergency. We know it’s a situation.
This can't even be explained by the erosion of truth in recent years because, hell, even Andrew Wakefield was a senior lecturer, I daresay a scientist.
But if you've read the article, it's apparent why, in this instance, these paleontologists would be claiming that these specimens lived thru the dinosaur extinction event as opposed to a more restrained verb.
I guess OP is saying that the BBC would obviously not be publishing the speculation of an unqualified layman, so the "scientists claim" is unnecessary. But doesn't seem to be to be the same thing Carlin was critiquing.
Nonetheless I find these new discoveries fascinating.
Murtogg: [shoots Mullroy a confused look] The Black Pearl is a real ship.
Mullroy: [turns to Murtogg] No. No, it's not.
Murtogg: Yes it is; I've seen it.
Mullroy: You've seen it?
Murtogg: Yes.
Mullroy: You haven't seen it.
Murtogg: Yes, I have.
Mullroy: You've seen a ship with black sails, that's crewed by the damned and captained by a man so evil that Hell itself spat him back out?
Murtogg: ...No.
Mullroy: No.
Murtogg: But I have seen a ship with black sails.
Mullroy: Oh! And no ship that's not crewed by the damned and captained by a man so evil that Hell itself spat him back out could possibly have black sails, therefore could possibly be any other ship but the Black Pearl? Is that what you're saying?
Murtogg: [thinks, then smiles] ...No.
Mullroy: Like I said, there's no real ship as can match the Interceptor...
(taken from https://www.moviequotedb.com/movies/pirates-of-the-caribbean... )
That... is either very poorly worded or obviously not true.
That said, I can't wait to see what we will think about these fossils a decade later. Right now the news seems a bit too sensationalist to be believed fully.
That is actually I think the proper attitude towards cutting edge research.
> That... is either very poorly worded or obviously not true.
But fish do breath. They filter water through their gills to do gas exchange. This process is called breathing. Why do you think it is obviously not true? (Or rather how would you word it better?)
The part as it rained down from the sky, to me, means that they were breathing the particles while they were falling from the sky. Not possible unless they were above water (which, granted, is possible for short periods), which would go against the fact that they were fish.
Stuff rains down from the sky, stuff enters water, fish start breathing in the stuff that rained down from the sky as more of the same stuff continues to rain down from the sky I don't know, seems possible to me.