Keyword: catastrophism

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  • Amazing Images Capture Giant Fireball Exploding Over the Bering Sea

    03/21/2019 6:39:04 AM PDT · by CtBigPat · 16 replies
    Sky & Telescope ^ | March 20, 2019 | Bob King
    Had there been eyewitnesses, we'd have known about the Bering blast within minutes, but it happened beneath the cloud deck in a sparsely populated region off the east coast of Russia's Kamchatka Peninsula (58.6°N, 174.2°W). Military satellites designed to look for nuclear explosions picked up the blast, as did more than 16 infrasound detectors worldwide. Luckily for us, so did the Japanese Himawari 8 satellite, which took striking images of the sooty trail of dust ablated from the meteoroid during its atmospheric passage.
  • 173 Kiloton Explosion Over Bering Sea Was Asteroid Breaking Up

    03/19/2019 9:51:44 AM PDT · by SunkenCiv · 46 replies
    YouTube ^ | March 19, 2019 | Scott Manley
    Almost nobody noticed this, but back in December a chunk of space rock slammed into the Earth's atmosphere at 32km/sec over the Bering sea. The aerodynamic forces tore it apart and it released energy equivalent to a 170 kiloton weapon. And almost nobody noticed. Find out more about the asteroid hazard and how you can help at the B612 Foundation. | 173 Kiloton Explosion Over Bering Sea Was Asteroid Breaking Up | Scott Manley | Published on Mar 19, 2019
  • First Evidence of a Giant Exoplanet Collision

    03/18/2019 11:59:35 PM PDT · by SunkenCiv · 32 replies
    Discover ^ | February 18, 2019 | Jake Parks
    To determine exactly why Kepler-107c is so dense, first the researchers considered what they already knew. Previous research has shown that intense stellar radiation can strip the atmosphere from a planet that sits too near its host star. But if the innermost planet lost its lighter atmospheric elements, it should be more dense than its twin, not less. According to the study, this would "make the more-irradiated and less-massive planet Kepler-107b denser than Kepler-107c," which is clearly not the case. However, there is another way that a planet can lose a lot of mass: by getting smacked with another planet....
  • US detects huge meteor explosion [December]

    03/18/2019 8:51:47 AM PDT · by BenLurkin · 27 replies
    BBC ^ | 18 March 2019 | Paul Rincon
    A huge fireball exploded in the Earth's atmosphere in December, according to Nasa. The blast was the second largest of its kind in 30 years, and the biggest since the fireball over Chelyabinsk in Russia six years ago. But it went largely unnoticed until now because it blew up over the Bering Sea, off Russia's Kamchatka Peninsula. The space rock exploded with 10 times the energy released by the Hiroshima atomic bomb. Lindley Johnson, planetary defence officer at Nasa, told BBC News a fireball this big is only expected about two or three times every 100 years. At about noon...
  • Glassy debris points to relatively recent asteroid impact in southeast Asia

    03/18/2019 10:49:29 AM PDT · by SunkenCiv · 5 replies
    Science Magazine ^ | January 3, 2018 | Katherine Kornei
    A kilometer-size asteroid slammed into Earth about 800,000 years ago with so much force that it scattered debris across a 10th of our planet's surface. Yet its impact crater remains undiscovered. Now, glassy remains believed to have come from the strike suggest the asteroid hit southeast Asia as our close ancestors walked the Earth... Aaron Cavosie, an astrobiologist and geochemist at Curtin University in Perth, Australia, and his colleagues examined the chemical composition of three tektites from Thailand. They searched for evidence of reidite, a rare mineral formed only by extreme pressures and temperatures, like those of an asteroid impact....
  • The Day the World Burned

    03/16/2019 10:59:38 AM PDT · by SunkenCiv · 23 replies
    University of California - Santa Barbara ^ | Friday, March 8, 2019 | Sonia Fernandez
    When UC Santa Barbara geology professor emeritus James Kennett and colleagues set out years ago to examine signs of a major cosmic impact that occurred toward the end of the Pleistocene epoch, little did they know just how far-reaching the projected climatic effect would be... the Younger Dryas Impact Hypothesis, which postulates that a fragmented comet slammed into the Earth close to 12,800 years ago, causing rapid climatic changes, megafaunal extinctions, sudden human population decrease and cultural shifts and widespread wildfires (biomass burning)... suggests a possible triggering mechanism for the abrupt changes in climate at that time, in particular a...
  • An unusually big asteroid will soon pass closer to Earth than the moon

    03/15/2019 4:28:01 PM PDT · by BenLurkin · 31 replies
    cnet ^ | March 15, 2019 | Eric Mack
    An asteroid twice as big as the bolide that exploded over Russia in 2013 will whiz by us next week at a distance that's closer to Earth than the moon. Despite what tabloid headlines might lead you to believe, small asteroids zip by the Earth on a fairly regular basis... and astronomers discover many of them when Earth is already in their rear-view mirror. Asteroid 2019 EA2 could be up to 128 feet (39 meters) wide. It's the rare rock making a close flyby that's also large enough that astronomers spotted it well in advance. The asteroid, detected earlier this...
  • Asteroid Bennu keeps spinning faster and scientists aren't sure why

    03/14/2019 2:53:36 PM PDT · by ETL · 63 replies
    Space.com ^ | Mar 13, 2019 | Meghan Bartels
    On a distant space rock being explored by a NASA probe, days are slowly shortening — and scientists are still trying to figure out why.Right now, the asteroid known as Bennu is spinning once every 4.3 hours. But scientists working on NASA's OSIRIS-REx mission to the space rock have used data gathered before the probe's arrival to calculate that Bennu's rotation rate is speeding up over time — by about 1 second each century."As it speeds up, things ought to change, and so we're going to be looking for those things and detecting this speed up gives us some clues...
  • "Off the Richter Scale" (Huge Predicted West Coast Earthquakes)

    03/13/2019 9:37:20 AM PDT · by Sarcasm Factory · 96 replies
    City Journal ^ | Winter 2019 | Michael J. Totten
    Americans have long dreaded the “Big One,” a magnitude 8.0 earthquake along California’s San Andreas Fault that could one day kill thousands of people and cause billions of dollars in damage. The Big One, though, is a mere mini-me compared with the cataclysm forming beneath the Pacific Northwest. Roughly 100 miles off the West Coast, running from Mendocino, California, to Canada’s Vancouver Island, lurks the Cascadia Subduction Zone, where the Juan de Fuca Plate is sliding beneath the North American Plate, creating the conditions for a megathrust quake 30 times stronger than the worst-case scenario along the notorious San...
  • ‘Oumuamua “Sped Up” in the Inner Solar System. This Might Be Why.

    03/13/2019 9:01:54 AM PDT · by BenLurkin · 22 replies
    .skyandtelescope.com ^ | March 12, 2019 | Camille M. Carlisle
    ‘Oumuamua appeared to hit the gas on its way out of the inner solar system. The body went a tiny bit faster than it should have if the only effect on its motion was the Sun’s gravity dragging on it. The best guess... was that ices vaporized from ‘Oumuamua’s surface by the Sun’s stark glare had given the body an extra kick. However, no observations had detected such outgassing. ...The team revisited all the observations made during ‘Oumuamua’s whiplash visit and have concluded that outgassing could indeed be to blame. The researchers looked at what would happen if incident sunlight...
  • Seven New Papers Forecast Global Cooling & Mini Ice Age

    03/12/2019 8:55:41 PM PDT · by Windflier · 90 replies
    Principia Scientific International ^ | 29 December 2017 | Kenneth Richard
    Temperatures To Decrease 0.5°C-0.7°C Due To Low Sunspots, Solar Minimum. Published on December 29, 2017 Written by Kenneth Richard During 2017, 120 papers linking historical and modern climate change to variations in solar activity and its modulators (clouds, cosmic rays) have been published in scientific journals. It has been increasingly established that low solar activity (fewer sunspots) and increased cloud cover (as modulated by cosmic rays) are highly associated with a cooling climate. In recent years, the Earth has unfortunately left a period of very high solar activity, the Modern Grand Maximum. Periods of high solar activity correspond to multi-decadal-...
  • Ice cores reveal huge solar storm struck Earth around 660 BC

    03/12/2019 6:47:12 PM PDT · by BenLurkin · 38 replies
    Physics World ^ | 12 Mar 2019 | Hamish Johnston
    An intense blast of high-energy protons from the Sun pummelled the Earth in about 660 BC and left a distinct record of cosmogenic nuclei in the Greenland ice sheet. The discovery was made by an international team of scientists who say the event was one most powerful solar storms known to have struck Earth. The team calculates that the storm was about ten times more intense than any event that has occurred in the past 70 years. “If that solar storm had occurred today, it could have had severe effects on our hi-tech society”, says Raimund Muscheler of Sweden’s University...
  • Dinosaurs thrived before fatal asteroid impact

    03/13/2019 4:47:46 AM PDT · by vannrox · 37 replies
    earthSky ^ | 12MAR19 | By Paul Scott Anderson
    Scientists have debated whether the dinosaurs were already in decline before a massive asteroid impact finished them off 66 million years ago. New research shows they were thriving in their final days. Help EarthSky keep going! Please donate what you can to our annual crowd-funding campaign.Dinosaurs once reigned on Earth, until a cataclysmic event – now thought to have been a massive asteroid impact, or possibly intense volcanic activity – wiped them out about 66 million years ago during the Maastrichtian age at the end the Late Cretaceous epoch. This mass extinction event was sudden and brutal, powerful enough to...
  • Special Report: Ekron Identity Confirmed [ from 1998 ]

    11/20/2006 9:03:51 PM PST · by SunkenCiv · 12 replies · 364+ views
    Archaeology ^ | January/February 1998 | Seymour Gitin, Trude Dothan, and Joseph Naveh
    An inscription carved into a limestone slab found at Tel Miqne, 23 miles southwest of Jerusalem, confirms the identification of the site as Ekron, one of the five Philistine capital cities mentioned in the Bible. The inscription is unique because it contains the name of a biblical city and five of its rulers, two of whom are mentioned as kings in texts other than the Bible. The only such inscription found in situ in a securely defined, datable archaeological context, it has far-reaching implications for our understanding of the history of Ekron and Philistia... The inscription was found in the...
  • Ancient microbes yield clues to ice age timing

    03/09/2019 12:38:24 PM PST · by BenLurkin · 23 replies
    Cosmos Magazine ^ | 08 March 2019
    For several million years, the Earth cycled through ice ages at a regular pace, but then, 1.25 million to 700,000 years ago, something changed: ice ages went from lasting 40,000 years to 100,000. … By looking at the microscopic shells of microorganisms called foraminifera, Adam Hasenfratz of the Geological Institute in Zürich, Switzerland, and colleagues, find evidence of a reduction in deep water circulation, causing less carbon dioxide to be released into the air. Oceanic changes in the Antarctic Zone could have ensured “that glacial conditions persisted despite orbital changes to the contrary”, the study says. The new research, presented...
  • Colossal asteroid set to travel by Earth on Friday, NASA says we will be fine

    03/06/2019 12:51:06 PM PST · by BenLurkin · 84 replies
    n y post ^ | March 6, 2019 | By Lauren Tousignant
    2019 DN, measures between 298 and 656 feet wide, according to NASA, but it will pass Earth around 13 lunar distances away. So 2019 DN’s flyby will be very far away from us — approximately 3,105,700 miles away. The asteroid that exploded above Chelyabinsk, Russia, in 2013 — injuring 1,500 and damaging thousands of buildings — measured about 65 feet wide. But even if 2019 DN were to change course, NASA says, its impact could do some damage but nothing apocalyptic.
  • Why are some icebergs green in Antarctica? Researchers think they've solved century-old mystery

    03/05/2019 4:46:28 PM PST · by EdnaMode · 33 replies
    Fox News ^ | March 5, 2019 | Jennifer Earl
    The stunning sight of emerald green-colored icebergs in Antarctica has been documented for more than a century — in literature and beyond. For decades, scientists have argued about the cause behind the bizarre phenomenon and debated why the green-hued ice chunks aren't the typical blue or white color. But a recent discovery from a 2016 research trip to East Antarctica’s Amery Ice Shelf may provide the final clue they've been waiting for. In a new study published in the Journal of Geophysical Research: Oceans, researchers found marine ice varies in color due to the "abundance of foreign constituents in the...
  • Alien species are 'primary cause' for global extinctions, study finds

    03/04/2019 10:28:40 AM PST · by chief lee runamok · 36 replies
    breitbart ^ | 04/04/2019 | Chris Ciaccia
    Perhaps it's a good thing we haven't found E.T. yet — he might cause us to become extinct.
  • Honeybees may be wiped out in 10 years

    01/24/2008 7:37:16 AM PST · by Momaw Nadon · 22 replies · 482+ views
    Telegraph.co.uk ^ | Sunday, January 20, 2008 | Jasper Copping
    Honeybees will die out in Britain within a decade as virulent diseases and parasites spread through the nation's hives, experts have warned. Whole colonies of bees are already being wiped out, with current methods of pest control unable to stop the problem. The British Beekeepers Association (BBKA) said that if the crisis continued, honeybees would disappear completely from Britain by 2018, causing "calamitous" economic and environmental problems. It called on the Government to restart shelved research programmes and to fund new ones to try to save the insects. Tim Lovett, the association's president, said: "The situation has become insupportable and...
  • Earth's Atmosphere 'Far Larger' than Scientists Had Believed

    02/23/2019 7:32:53 PM PST · by E. Pluribus Unum · 57 replies
    PJ Media ^ | FEBRUARY 23, 2019 | MICHAEL WALSH
    Whoops! The Earth's atmosphere is far bigger than we had realized, scientists have announced. The outermost part of our atmosphere reaches nearly twice as far as the Moon and is about 50 times as big as our own planet, new research has shown. “The Moon flies through Earth’s atmosphere,” says Igor Baliukin of Russia’s Space Research Institute, lead author of the paper presenting the results. “We were not aware of it until we dusted off observations made over two decades ago by the SOHO spacecraft.” At the boundary of own atmosphere and outer space, there is a cloud of hydrogen...