The death of dinosaurs was all about the asteroid 31JAN2020

 The death of dinosaurs was all about the asteroid

Yale University. "In death of dinosaurs, it was all about the asteroid

-- not volcanoes." ScienceDaily. ScienceDaily, 16 January 2020.

www.sciencedaily.com/releases/2020/01/200116141708.htm

Meteorite or Volcano? New Clues to the Dinosaurs’ Demise

Twin calamities marked the end of the Cretaceous period, and

scientists are presenting new evidence of which drove one of

Earth’s great extinctions. New York Times, January 16, 2020

https://www.nytimes.com/2020/01/16/science/dinosaurs-extinction-meteorite-volcano.html

The paper is:

Hull, P.M., Bornemann, A., Penman, D.E., Henehan, M.J., Norris, R.D.,

Wilson, P.A., Blum, P., Alegret, L., Batenburg, S.J., Bown, P.R. and

Bralower, T.J., 2020. On impact and volcanism across the Cretaceous-

Paleogene boundary. Science, 367(6475), pp.266-272.

https://science.sciencemag.org/content/367/6475/266.abstract

Yours,

Paul H.

Yarrabubba impact structure, Australia, dated to 2224 - 2234 Ma (end of Snowball Earth) 30JAN2020

 Yarrabubba impact structure, Australia, dated to 2224 - 2234 Ma (end of Snowball Earth)

Earth's oldest asteroid strike linked to 'big thaw'

Curtin University, January 22, 2020

https://www.sciencedaily.com/releases/2020/01/200122100546.htm

 

the open access paper is:

 

Timmons M. Erickson, Christopher L. Kirkland, Nicholas

E. Timms, Aaron J. Cavosie, Thomas M. Davison. Precise

radiometric age establishes Yarrabubba, Western

Australia, as Earth’s oldest recognised meteorite

impact structure. Nature Communications, 2020; 11 (1)

DOI: 10.1038/s41467-019-13985-7

https://www.nature.com/articles/s41467-019-13985-7

 

Yours,

 

Paul H.

Fireball spotted over Huron County, Michigan 27JAN2020

 Fireball spotted over Huron County, Michigan

Fireball spotted over Huron County, Michigan

Scott Miller, CTV, January 22, 2020

https://london.ctvnews.ca/fireball-spotted-over-huron-county-1.4779117

Fireball ‘as bright as the moon’ lands in Lake Huron

Michgan Live, January 25, 2020

https://www.mlive.com/weather/2020/01/fireball-as-bright-as-the-moon-lands-in-lake-huron.html

A Meteor That Lit Up Ontario Skies This Week

Came All The Way From Beyond Mars (Video)

Lisa Belmonte, Narcity News, January 25, 2020

https://www.narcity.com/news/ca/on/meteor-over-ontario-was-traced-back-to-the-asteroid-belt-beyond-mars

Yours,

Paul H.

Impacts of Google Earth on Scientific Research 27JAN2020

 Impacts of Google Earth on Scientific Research

Liang, J., Gong, J. and Li, W., 2018. Applications and impacts of Google

Earth: A decadal review (2006–2016). ISPRS Journal of Photogrammetry

and Remote Sensing, 146, pp.91-107.

https://www.researchgate.net/publication/327622426_Applications_and_impacts_of_Google_Earth_A_decadal_review_2006-2016

https://www.researchgate.net/profile/Jianming_Liang2

 

Yours,

 

Paul

 

"The past is never dead. It's not even past."

William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)

Seven billion year-old stardust found in meteorite 15JAN2020

 Seven billion year-old stardust found in meteorite

Meteorite contains the oldest material on Earth: 7-billion-year-old
stardust. The ancient stardust reveals a 'baby boom' in star formation
Field Museum, January 13, 2020
https://www.sciencedaily.com/releases/2020/01/200113153306.htm
https://www.sciencenews.org/article/ancient-meteorite-stardust-oldest-ever-examined-lab

The paper is;

Philipp R. Heck, Jennika Greer, Levke Kööp, Reto Trappitsch, Frank
Gyngard, Henner Busemann, Colin Maden, Janaína N. Ávila, Andrew
M. Davis, Rainer Wieler. Lifetimes of interstellar dust from cosmic
ray exposure ages of presolar silicon carbide. Proceedings of the
National Academy of Sciences, Jan. 13, 2020; DOI: 10.1073/pnas.1904573117

Yours,

Paul H.

Shocked meteorites provide clues to Earth's lower mantle 12JAN2020

 Shocked meteorites provide clues to Earth's lower mantle

Shocked meteorites provide clues to Earth's lower mantle

by Karin Valentine, Arizona State University, January 10, 2019

https://phys.org/news/2020-01-meteorites-clues-earth-mantle.html

https://scitechdaily.com/extraterrestrial-clues-to-earths-lower-mantle-from-shocked-meteorites/

The paper is:

Luca Bindi, Sang-Heon Shim, Thomas G. Sharp, and Xiande Xie,

2020, Evidence for the charge disproportionation of iron in

extraterrestrial bridgmanite. Science Advances?? 10 Jan 2020:

Vol. 6, no. 2, eaay7893 DOI: 10.1126/sciadv.aay7893

https://advances.sciencemag.org/content/6/2/eaay7893

Yours,

Paul H.

New location proposed for Australasian strewnfield crater 05JAN2020

New location proposed for Australasian strewnfield crater

Crater found from asteroid that covered 10% of Earth's surface in debris. The crater sits beneath a plain of hardened lava that formed after the asteroid impact, which occurred nearly 800,000 years ago.
By Leslie Nemo, Astronomy, Friday, January 3, 2020
https://astronomy.com/news/2020/01/crater-found-from-asteroid-that-covered-10-of-earths-surface-in-debris

The open access paper is:

Sieh, K., Herrin, J., Jicha, B., Angel, D.S., Moore, J.D., Banerjee, P., Wiwegwin, W., Sihavong, V., Singer, B., Chualaowanich, T. and Charusiri, P., 2019. 

Australasian impact crater buried under the Bolaven volcanic field, Southern Laos. 

Proceedings of the National Academy of Sciences.
https://www.pnas.org/content/early/2019/12/24/1904368116.short

Yours,

Paul H.

Quadrantid meteor shower will peak 03/04 January, Friday night/Saturday morning 03JAN2020

 Quadrantid meteor shower will peak 03/04 January, Friday night/Saturday morning

Quadrantid meteor shower will peak tomorrow

night (03/04 January, Friday night/Saturday morning)!

Bad Astronomy, Phil Plait, January 2, 2020

https://www.syfy.com/syfywire/fireworks-for-the-new-year-the-quadrantid-meteor-shower-peaks-tomorrow

By the way, really weird stuff is also happening in Colorado skies.

Mysterious drones flying nighttime patterns over

northeast Colorado leave local law enforcement stumped

Phillips County sheriff says there are at least 17 of

the aircraft that fly between 7 and 10 p.m. nightly

By Shelly Bradbury, The Denver Post, December 23, 2019

https://www.denverpost.com/2019/12/23/drones-mystery-colorado/

‘It’s Creepy’: Unexplained Drones Are Swarming by

Night Over Colorado. Sheriffs in western Nebraska

and eastern Colorado say they don’t know who’s

flying the drones — or why. The F.A.A. is investigating.

Mitch Smith, New York Times, January 1, 2020

https://www.nytimes.com/2020/01/01/us/drones-FAA-colorado-nebraska.html

Mysterious swarms of giant drones have started to

appear in the Colorado and Nebraska night sky,

and nobody knows where they're coming from

Irene Jiang, Business Insider, December 30, 2019

https://www.businessinsider.com/giant-drone-swarm-mystery-in-colorado-nebraska-skies-2019-12

Yours,

Paul.

"The past is never dead. It's not even past."

William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)