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The Daily Cosmos or Interesting Facts about the Universe

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The Daily Cosmos or Interesting Facts about the Universe

Cosmology
Astrophysics
Astronomy

Location: #science
Members: 63
Latest Activity: Sep 18

 

Cosmology - Astrophysics - Astronomy

 

Hubble Wallpaper - Awesome Hubble Images

Discussion Forum

Big Bangers' Imaginations Supply Their Story's Only Support.

Started by Tom Sarbeck. Last reply by Joey Daniel Smith Dec 22, 2018. 7 Replies

'Hot Jupiter'

Started by Mrs.B. Last reply by Mrs.B Apr 9, 2016. 7 Replies

NASA's Solomon's Choice.

Started by Davy Oct 3, 2013. 0 Replies

This is Science at Work.

Started by Davy. Last reply by Davy Aug 15, 2013. 1 Reply

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Comment by Doone on September 18, 2020 at 6:47pm

Interesting look to an inverted Earth

In a reverted world (land and water switched) I'd like to live in the Mediterranean. https://buff.ly/2u4T4p5
Image
Comment by Joan Denoo on September 18, 2020 at 3:09am

“The conventional wisdom in the paleontological community has been that the Permian extinction was especially severe in tropical waters.” "Yet the model shows the hardest hit were organisms most sensitive to oxygen found far from the tropics. Many species that lived in the tropics also went extinct in the model, but it predicts that high-latitude species, especially those with high oxygen demands, were nearly completely wiped out."

~ HANNAH HICKEY, UNIVERSITY OF WASHINGTON, (December 06, 2018). What caused Earth's biggest mass extinction? Stanford Earth. 


 

Comment by Joan Denoo on September 18, 2020 at 2:40am

Doone, also, the Great Extinction occurred during the Russian flows:

"we had to demonstrate that the eruption and extinction were truly related in time. They appeared to have occurred at the same time, at least within the ability to discriminate of the best techniques available for determining age. But there was still a significant degree of uncertainty. We set out to improve the date measurements and demonstrate that the volcanic eruptions began, and then the extinction happened. If the extinction happened first—well, we are pretty sure that extinctions don’t cause volcanoes, so we would have been left with an astounding coincidence. Though this simple sentence cannot do justice to the many years of effort it took, Seth Burgess and Sam Bowring of MIT have now definitively shown that the eruptions completed a majority of their volume before the extinction occurred." 

"We can count the causes of global extinctions on less than one hand: giant meteoroid impact, nuclear war, and chemical change of the atmosphere. That’s about it. At the end-Permian there is no geological evidence of a major meteoroid impact: no ash layer, no iridium enrichment from space material, no crater, no layers of spheres of scattered and fallen melt from impact. We can pretty safely assume there was no nuclear war at the end-Permian. That leaves us with a chemical change of the atmosphere."

"A volcanic eruption can certainly chemically change the atmosphere..."  

~ LINDY ELKINS-TANTON (July 31, 2015). From Russia With Magma: What a volcanic explosion 250 million years ago tells us about climate change. Slate.

Read on. There is an interesting analysis of what caused he Permian Era 1st Great Extinction. 

Comment by Doone on September 17, 2020 at 8:13pm

How Dinosaurs got their start

The cause was most likely massive volcanic eruptions in the Wrangellia Province of western Canada, where huge volumes of volcanic basalt was poured out and forms much of the western coast of North America.

https://phys.org/news/2020-09-discovery-mass-extinction.html

Comment by Chris B on September 15, 2020 at 6:00am

Thanks, Doone! I've visited that museum once a year these 40 years and missed it.

Comment by Onyango Makagutu on September 15, 2020 at 5:04am

It's like the game of life. Ends in disaster or rest depending on how you view death

Comment by Stephen on September 15, 2020 at 1:20am

Doone. That's a shame that we don't know the rules, it looks like it might have been a good game.

Comment by Doone on September 14, 2020 at 9:13pm
Egyptian boardgame Limestone. Rules of the game are unknown but the goose head seems to be the beginning of the game and the snake the end. Egyptian, further date unknown. Source-Leiden Museum of Antiquities.
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Comment by Stephen on September 14, 2020 at 7:39pm

Phosphine on Venus - Lead scientist Jane Greaves explains the discovery

Comment by Mrs.B on September 12, 2020 at 3:43pm

Impressive.

 
 
 

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