6MAR2010 meteor/meteorite news

Pluska.sk

100-kilový meteorit pod Tatrami

Pluska.sk - ‎19 分前‎

Kým po meteorite, ktorý preletel pred pár dňami naším územím, niet ani stopy ao jeho dopade sa háda Slovensko s Maďarskom, Friedrich Neuhaus (66) má ...

Fireball across Ireland as meteorite crashes to Earth 3FEB2010
posted on YouTube by NOLINKNEWS March 05, 2010
Space rock plunges through atmosphere and crashes in Ireland
A meteorite traveling with the force of a small nuclear weapon blazed across the sky in Ireland Wednesday and crashed inland.
Astronomy Ireland says the fireball, which was traveling at 100,000 miles per hour, was spotted at about 6 p.m.
The meteorite - which eyewitnesses said was the same size as a small desk - was seen by people up and down the country.
http://www.rte.ie/news/2010/0203/mete...


Ein Meteorit rottete die Dinos aus

Nürnberger Zeitung - ‎17 分前‎

Es ist ein Szenario, das man lieber verdrängt: Ein Meteorit von zehn Kilometern Durchmesser rast auf die Erde zu – mit einer Geschwindigkeit von 72.000 ...

Investigating the fireball frenzy in Duluth

Park Rapids Enterprise - by Bob King ‎15 分前‎

The most likely explanation is a brilliant meteor called a fireball. In a lifetime you might see a half-dozen of these spectacular sights, but they occur ...

Het is nu zeker: dino's stierven uit door meteoriet

De Standaard - ‎3 時間前‎

De theorie over de meteoriet zou nu onweerlegbaar zijn. Uit de gegevens blijkt dat de kracht van de inslag te vergelijken was met die van 5 miljard ...

Spelunking the lunar landscape

Discover Magazine (blog) - ‎13 分前‎

The hole may be a collapsed section, or it may have been punched by a larger meteorite. Given the size of the hole, the impactor couldn't have been bigger ...

Confirmado: El asesino fue el meteorito

NeoTeo - ‎16 分前‎

Un nutrido grupo de científicos ha corroborado la teoría de que el culpable de matar a millones de reptiles prehistóricos fue un enorme meteorito que ...

Definitivní verdikt vědců: Dinosaury vyhubil meteorit

Aktuálně.cz - ‎9 分前‎

O tom, zda způsobil zkázu druhohorních plazů skutečně meteorit, se vedly spory. Podle panelu 41 vědců, který zkoumal práce paleontologů, sedimentologů, ...

New study blames dinosaur deaths on big meteor strike Signs of the ...

Nuremberg, Germany - A new German-led study has marshalled even more powerful evidence that a single meteor strike 65 million years ago led to the sudden ...

Clues to Antarctica space blast

BBC News
The study's authors think these spherules could be material eroded from a stony meteorite as it was heated up on its way through our atmosphere. ...

恐竜絶滅 やはり巨大隕石が原因…東北大など国際研究チームが結論

読売新聞 - ‎10 時間前‎

約６５５０万年前の白亜紀末に恐竜などが大量絶滅したのは、メキシコ・ユカタン半島に巨大な 隕石 ( いんせき ) が衝突したことが原因と結論づける報告を、東北大など１２か国の研究機関による研究チームがまとめ、５日の科学誌サイエンスに発表した。これまでも隕石衝突 ...

Vatican astronomer makes God connection

Warren Tribune Chronicle
His research explores connections between meteorites, asteroids and the evolution of small solar system bodies, observing Kuiper Belt comets with the ...

Dinosaurs Wiped Out by Asteroid? Maybe Not 28APR09

New Blow for Dinosaur-Killing Asteroid Theory
PhysOrg.com
This artist's rendering shows the Chicxulub crater at the time of the meteorite's impact. Credit: NASA (PhysOrg.com) -- The enduringly popular theory that ...


Were the Dinosaurs Really Wiped Out by an Asteroid? Possibly Not (Update)
Universe Today - Apr 27
In 1979, the huge Chicxulub crater, measuring about 180 km (112 miles) in diameter, was discovered on the northern Yucatan Peninsula, Mexico. Scientists made the obvious conclusion that something rather large had hit the Earth in this location, probably causing all kinds of global devastation 65 million years ago. At around the same time, 65% ...

Another meteor impact coincides with large-scale volcanic eruptions -Planet Earth 27FEB09

http://planetearth.nerc.ac.uk/news/story.aspx?id=332

Another meteor impact coincides with large-scale volcanic eruptions
---Planet Earth online 23 February 2009
Scientists have long debated the cause of the dinosaurs' extinction about 65 million years ago. The remnants of a large volcanic eruption in the Faroe Islands. These eruptions can go on for millions of years. Around this time a giant meteorite struck the Gulf of Mexico. But the extinction also seems to coincide with massive and long-lasting volcanic eruptions in India known as the Deccan Traps. So which event was responsible? And are these phenomena linked?
New research now shows that this combination of meteorite impact andlarge-scale volcanic activity - known as flood basalt eruptions - is not unique. An international team of researchers looked at a 30-million-year-old meteorite crater in Belarus called Logoisk. They found that this too coincided with volcanic eruptions further south which covered Yemen and Ethiopia with basalt rock. These events are similar to those that occurred 65 million years ago, but on a much smaller scale. The scientists suggest such coincidences may be more common than previously thought. Dr Sarah Sherlock from the Open University and lead author of the paper, says, 'If you have a flood basalt then people wonder if there's also an impact. ''There will be, almost certainly,' she added. According to the paper, a meteorite will strike the Earth and leave a crater the size of Logoisk on average once every 1.5 million years. Flood volcanic eruptions occur over several million years, so a Logoisk-sized crater is likely to occur during each of the 16 identified periods of flood volcanism on Earth in the last 360 million years. However, researchers do not think there is a causal link between flood volcanism and meteorite impact.'There is simply no geological evidence to link the two,' says Sherlock. To determine the precise age of the Logoisk crater the researchers used argon dating. 'Argon dating is very versatile.' said Sherlock. 'It's the only technique that can be used to date both [impacts and flood volcanism].' Samples of material from the crater were gradually heated using an infrared laser, causing the release of argon gas. The ratio of two isotopes of argon released in the gas gives an accurate indication ofthe age of the sample. Using this technique, the researchers showed that the two events occurred simultaneously.
One question raised by the results was why the meteorite impact and flood volcanism 65 million years ago wiped out much of life on Earth, including the dinosaurs, but the similar events 30 million years ago did not. According to Sherlock, it was down to the size of the events.'These coincidences in Earth's history are not as rare as people think,but in order to actually do significant damage to the environment they have to be really, really big.' Sherlock added. Together, the 65-million-year-old Chicxulub crater in the Gulf of Mexico and volcanic eruptions that produced the Deccan Traps eruption 65 million years ago released 8000 gigatonnes (Gt) of sulfur dioxide, causing global environmental damage. By comparison the Logoisk and Afro-Arabian events released only 30Gt - insufficient to cause change on a global scale.

The research is published in the Journal of the Geological Society, London.