National Post’s Post

Asteroid That Killed Dinosaurs Originated Beyond Jupiter Image by Peter Schmidt from Pixabay Dinosaur-killing Chicxulub asteroid formed in Solar System’s outer reaches https://lnkd.in/g2_2Yfd7 By Michael Marshall Scientists have discovered that the asteroid responsible for wiping out the dinosaurs 66 million years ago originated from beyond Jupiter, in the outer reaches of the Solar System. By studying geochemical evidence from the impact site in Chicxulub, Mexico, researchers were able to analyze rare isotopes of ruthenium and concluded that the asteroid came from a carbonaceous region rich in volatile chemicals, unlike the inner Solar System's silicate-rich asteroids. This evidence also refutes the long-standing theory that the impactor was a comet. The findings highlight the complex origins of the event that led to the mass extinction of the dinosaurs and reshaped life on Earth. #WesternCanadaReason #wecanreason #criticalthinking #skeptics #science #Asteroid #Dinosaurs

Asteroid That Ended the Dinosaurs Originated Beyond Jupiter: A Turning Point in Earth’s History The asteroid that led to the extinction of the dinosaurs and altered the course of life on Earth originated from the outer reaches of our solar system, beyond the orbit… #Asteroid #Dinosarsurs #Earth #Jupiter >>> Read more

If Earth's history was condensed to 24 hours, humans wouldn't exist until just 77 seconds before midnight Human would arrive at 11:58:43 pm. And dinosaurs would have been wiped out by an asteroid just 21 minutes before humanity’s debut. If you compressed Earth’s 4.5 billion-year history into a single 24-hour day, humanity’s existence would barely register on the clock. In this timeline, humans wouldn’t appear until 11:58:43 PM. To put that into perspective, all of recorded human history, from the invention of writing to modern civilization, would take place within the final few seconds of this cosmic day. Throughout most of this hypothetical day, the planet was teeming with other events and life forms. Earth formed at midnight, and by around 4 AM, the first single-celled organisms emerged. Yet, it wasn’t until about 8:30 PM that complex, multicellular life began to flourish. Dinosaurs roamed for hours, between 10:56 PM and 11:39 PM, only to be wiped out by an asteroid just 21 minutes before humanity’s debut.

Theoretically, if I was 100 million light years away from Earth, would I be able to watch the dinosaurs if I had a telescope strong enough? Well yes, but actually no: In theory?  Yes, light that had hit the dinosaurs tens of millions of years ago is still wandering through space tens of millions of light years away. Really?  No; as far as our current understanding of physics goes, no species could ever build a telescope big enough to catch light that is so far and sparse and focus it in such a way that you would see a dinosaur. 100 million light years is a very large distance, far more than the exoplanets that we have observed so far - aliens that far would be in a galaxy at the far edge of the Virgo cluster of galaxies. The way photons can be focused responds to fundamental laws of physics, thus no amount of technological advancement could ever overcome it: An observer at a distance of about 65 million light years (which is when the dinosaurs went extinct), would need a telescope of about 58 million km to be able to see Earth in a 1 pixel resolution. In order to get a glimpse of dinosaurs walking around though, the telescope lens would have to be of a diameter of over 4 light years. You can already see the problem: such a big structure would firstly collapse in on itself, and even if it could somehow stand together, given the density and weight properties of glass, any glass construction over 28 light minutes will just turn into a black hole due to its gravitational pull. Credit: https://qr.ae/p2O8Wj

A carbonaceous chondrite formed in distant reaches of the solar system was responsible for the impact that brought about the extinction of the dinosaurs, according to analysis of rubidium isotope compositions.

1 new thing I learnt this week This isn't new but I discovered some new elements of it this week. The Cosmic Calendar. If the entire Universe's age of ~14 billion is crunched in a calendar year, at what date and time did things happen? 1st Jan - Big Bang happened. 26 Jan - The first galaxies were formed. 16 Mar - Milky Way (our galaxy) was formed. 2 Sep - Our Solar System was formed. 21 Sep - First life appears on Earth. 30 Sep - Photosynthesis starts. 29 Oct - Oxygen appears in the atmosphere. 25 Dec - Dinosaurs arrive. 27 Dec - Birds arrive. 28 Dec - Flowers emerge. 31 Dec 2:24 pm: The first form of humans emerge. 31 Dec 11:52 pm: The current form of humans emerge. 31 Dec 11:59:32: Agriculture starts. 31 Dec 11:59:59: The last 450 years happen! We are a spec in time. It sure puts things into a different perspective.

New research suggests that a ring formed around the Earth about 466 million years ago, potentially explaining an unusually high number of meteor impacts and influencing the planet’s climate. Earth’s history with cosmic materials includes the well-known Chicxulub impact that wiped out the dinosaurs, but there were earlier impacts, particularly during the Ordovician period. #ClimateImpact #Earth´sPotentialRingSystem #Scitke

New research suggests that a ring formed around the Earth about 466 million years ago, potentially explaining an unusually high number of meteor impacts and influencing the planet’s climate. Earth’s history with cosmic materials includes the well-known Chicxulub impact that wiped out the dinosaurs, but there were earlier impacts, particularly during the Ordovician period. #ClimateImpact #Earth´sPotentialRingSystem #Scitke

The asteroid that may have killed the dinosaurs came from beyond Jupiter Chemical clues left in the impact crater can help trace the space rock’s origins. Earth’s most famous killer asteroid came from the outer reaches of the solar system, researchers report in the Aug. 16 Science. About 66 million years ago, an asteroid slammed into the sea just off Mexico’s Yucatán Peninsula, forming the Chicxulub crater. That powerful impact may have triggered a mass extinction event on Earth, killing off more than 60 percent of the planet’s species, including all nonbird dinosaurs (SN: 1/25/17). The impact left geochemical fingerprints, such as elevated levels of the element iridium, in a thin layer of rock found in multiple countries around the globe (SN: 9/8/84).  Now, new chemical analyses of those rock layers, which mark the boundary between the Cretaceous and Paleogene periods (known as KPg), are helping to create a forensic profile of the killer asteroid. Geochemist Mario Fischer-Gödde of the University of Cologne in Germany and colleagues measured five isotopes, or forms, of ruthenium in the KPg rock layers, as well as in five impact craters that occurred between 36 million and 470 million years ago and in Earth-based platinum ores (SN: 12/18/18). Ruthenium, like iridium, is a platinum-group element, rare in Earth’s crust but abundant in asteroids and other space rocks. However, the relative abundance of ruthenium isotopes varies among space objects depending on where they originate. The ruthenium signatures in the KPg rocks were indistinguishable from one another, tying them all to the same event, the team found. And that event was definitely extraterrestrial, not from ashfall due to intense volcanic eruptions that have also been implicated in the dinosaurs’ demise (SN: 9/28/23). https://lnkd.in/eHAZkVcM

A package from beyond Jupiter: Unlocking the mysteries of the dinosaur-killing asteroid ☄️ In a groundbreaking discovery, scientists have unearthed the 'genetic fingerprint' of the Chicxulub impactor, the infamous asteroid that led to the extinction of dinosaurs 66 million years ago. Originating from beyond Jupiter, this asteroid has left a significant mark on Earth, creating a 90-mile-wide crater near Chicxulub, Mexico. Utilizing a novel technique that breaks every chemical bond in rock samples, researchers were able to measure specific levels of a rare element called ruthenium. This is a chemical composition found mainly in asteroids between Mars and Jupiter, suggesting that the Chicxulub impactor was likely propelled towards Earth by collisions with other space rocks. Looks like we've finally solved the mystery of what really happened to our beloved dinosaurs. May they rest in peace as we continually unravel the mysteries of our cosmos. #Space #Universe #SpaceEconomy #SpaceExploration #Mars #Jupiter #Research #Innovation #Future #NewSpace www.viaspaceholdings.com Source: https://lnkd.in/geZvA7Gv