Far-Off Supernovas Caused Climate Change on Earth, According to Tree Rings ... How is that even possible?

www.popularmechanics.com ^ | November 16, 2020 | By Tim Childers

[Pikachu_Dad]

I was very clear in my reply

[Red Badger]

No such thing.......................

[null and void]

I was very clear in my original post.

[blam]

Mike Baillie

Michael G. L. Baillie is Professor Emeritus of Palaeoecology at Queen's University of Belfast, in Northern Ireland. Baillie is a leading expert in dendrochronology, or dating by means of tree-rings. In the 1980s, he was instrumental in building a year-by-year chronology of tree-ring growth reaching 7,400 years into the past.

Upon examining the tree-ring record, Baillie noticed indications of severe environmental downturns around 2354 BC, 1628 BC, 1159 BC, 208 BC, and AD 540. The evidence suggests that these environmental downturns were wide-ranging catastrophic events; the AD 540 event in particular is attested in tree-ring chronologies from Siberia through Europe and North and South America

[Tallguy]

Petrified? But then would the rings still be distinguishable for chemical analysis as they are literally transformed into stone?

[Reily]

You can see the rings in well preserved petrified wood.

[Tallguy]

Yes, you can see them. I’m just wondering about the distribution of radioactive material when minerals start replacing cellulose during the process of petrifying. Can you still rely on readings that would normally concentrate in an annual growth band?

[Tell It Right]

Whether warming is caused by supernovae or sunspot activity, it's evident we go through phases of warming and cooling.

The Medieval Warming Period occurred for a few centuries, crops yielded more, people flourished, sea levels rose, all of that is fact.

Then there was a cooling period over centuries sometimes referred to as The Little Ice Age. Crops yielded less, there were famines, sea levels receded (the ancient city Ephesus of the New Testament used to be a port city, now it's a few miles from the sea), all of that is fact.

Absolutely nobody should be surprised at the warming that's occurred for the past two centuries as we've come out of the Little Ice Age and begin another warming period. In fact, we should embrace it.

[UnwashedPeasant]

Correction: “man-made supernovas, and the only answer is less freedom”

[null and void]

If you know each ring corresponds to one years growth, and you can match wide-narrow 'bar codes' from an early portion a tree growing today to a late portion of a tree long dead (say, roof beams in an Anasazi dwelling), and the 'bar code' close to the heart of that to a deep water preserved keel from a Roman era ship, and so on, you know exactly how old a piece of wood large enough to have enough rings really is. If it still has the bark, you can even tell the season, it died, whether it fell in spring or fall!

[Red Badger]

and higher taxes..................

[SunkenCiv]

Thanks Red Badger.

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The rest of the Iron-60 keyword, chrono:

• We Now Have Proof a Supernova Exploded Perilously Close to Earth 2.5 Million Years Ago [2020]
• A Supernova Exploded Dangerously Close to Earth 2.5 Million Years Ago [2020]
• Solar System is Traveling through Cloud of Supernova Debris: Study [2020]
• Do you like Earth's solid surface and life-inclined climate? Thank your lucky (massive) star [2019]
• Researchers consider whether supernovae killed off large ocean animals at dawn of Pleistocene [2018]
• Our Solar System Was Born in the Bubble Created by the Death of a Giant Star, Say Scientists [2018]
• Earth Barraged By Supernovae Millions Of Years Ago, Debris Found On Moon [2017]
• Did a supernova two million years ago brighten the night sky and give our ancestors cancer? [2016]
• Supernovae showered Earth with radioactive debris [2016]
• Violent Past: Young sun withstood a supernova blast [2013]
• Hubble boffins: Incredibly old supernova could explain EVERYTHING [2013]
• Researcher points to Sun as likely source of eighth-century 'Charlemagne event' [2012]
• Ancient supernovae may be recorded in Antarctic ice [2009]
• Creating Elements after BB: Where did the Supernova's Go?(Vanity) [2007]
• Supernova debris found on Earth [2004]
• Astronomy Picture of the Day 05-23-04 [2004]
• Theory Proposes New View of Sun and Earth's Creation [2004]
• Did a gamma-ray burst devastate life on Earth? [2003]
• How star blasts forged mankind [2002]
• Supernova "Smoking Gun" Linked To Mass Extinctions [2002]

other recent related topics:

• The Great Reset: Reset and shape the future
• "The Great Reset" Trends on Twitter After Justin Trudeau Says Corona Pandemic Has Provided "Opportunity" [Soi Boi Spills the Beans]
• Monday News Roundup: A New Vaccine and a New Biden-Related Voter Fraud Scam
• Rough Road Ahead
• Climate Scientists Debunk 'Point of No Return' Paper Everyone's Freaking Out About

[SunkenCiv]

[Mr. K]

When I went to college For physics I got this question from my college professor...

I believe that empty space is not so empty. I suspect there are many clumps of matter that never formed stars, that may even have planets.

Especially with supernovas sending out chunks of matter all over the place formed of heavy elements .

[Pelham]

Olber’s Paradox, the Big Bang, and the expanding universe.

[Harmless Teddy Bear]

Because there are not that many stars as we think?

You go big and it is mostly space.

You go little and it is mostly space.

No matter which way you go matter is scarce.

Life is even more scarce.

And sentient life is the rarest thing in the universe.

[Fred Hayek]

One little nitpick on this article. Carbon-12 is not turned into Carbon-14. There is no neutron capture involved. Nitrogen-14, the most common isotope, is turned into Carbon-14, which in turn beta decays back to Nitrogen-14.

[Abathar]

I wonder just how many copies of the “International Journal of Astrobiology” gets mailed each month or is it just an on-line subscription now.

[Red Badger]

Astrobiology probably doesn’t have a lot of specimens to study.......................yet............

[gleeaikin]

In addition to volcano caused cold weather and shadow, there are also layers of volcanic ash and lava. Those layers can be tested for age and things under or above them are older or younger. Where there are multiple layers separated by centuries, one can find and date old trees approximately and see the between eruption conditions recorded.