Some #corundum on Earth is older than our solar-system; these pre-solar grains are found in some chondritic meteorites. Oxygen isotopes reveal that they formed in the puffed-off atmospheres of old red-giant stars. From Frisch et al. 2005.
#MinCup23 #Cosmochemistry #Meteorites

Analysis of this morning's #perseid #fireball.. Sadly no chance of #meteorites: it broke up at around 85km altitude while still travelling at 180,000km/h (50km/s). The cameras had a good view of the terminal point.
Mag -4.2 Perseid, blew up over mid-Wales, probably near Shrewsbury - which by a coincidence is where at least one other fireball occured in the last year! Someone doesn't like the welsh marches... 🙂

#Météorites
Avec Aurélien #Barrau et #Desertstreet

https://indymotion.fr/w/c17da512-8fe9-44b1-952a-dbddcb7ae823

#Lecture #Poésie #Musique #Guitare #Peertube

#Perseid #meteorshower: All you need to know in 2023
The #Perseids always peak around August 11, 12 and 13, right before a new moon. Under a dark sky with no moon, skywatchers frequently report 90 meteors per hour, or more. Few – if any – #meteors in annual showers hot the ground to become #meteorites. The parent #comet responsible for the Perseid #meteor shower is a rather large comet called 109P/Swift-Tuttle. The comet orbits the sun approximately every 133 years.
https://earthsky.org/astronomy-essentials/everything-you-need-to-know-perseid-meteor-shower/

I had no idea that #meteorites could be worth this kind of money.

https://www.cbc.ca/news/canada/new-brunswick/fireball-meteorite-maine-nb-museum-1.6808385

Great talk by Veronica Tollenaar on #BlueIce areas in #Antarctica that somehow manages to unite meteorites, machine learning, satellite data and the impact of #ClimateChange ..

It turns out that warming temperatures help the #meteorites melt their way into the ice and be lost.
#IUGG23 #IUGG

Earth’s continents were not formed by volcanic eruptions but by meteorites that bombarded the planet billions of years ago. This is the surprising finding of a new study that analyzed ancient rocks from Greenland and Australia. The study suggests that Earth’s crust was shaped by extraterrestrial forces and that life may have originated from space.

#Earth #Continents #Meteorites https://studyfinds.org/how-did-earth-make-continents/?utm_source=flipboard&utm_content=topic%2Fearthscience

• De nouvelles météorites dans la galerie de géologie et de minéralogie : https://www.vigie-ciel.org/2023/05/30/une-collection-vivante-de-nouvelles-meteorites-dans-la-galerie-de-geologie-et-de-mineralogie/ •
#astronomie #Météorites

A Role for Meteoritic Iron in the Emergence of Life on Earth

https://www.mpia.de/news/science/2023-07-iron-meteorite

Search over 1,500 astronomy and space news releases at www.stars-n-stuff.com/news-stories

#astronomy #space #science #news #stargazing #meteorites

Image: O. Trapp

The #Winchcombe #fireball—That lucky survivor: https://onlinelibrary.wiley.com/doi/10.1111/maps.13977 -> the "progenitor meteoroid was three orders of magnitude less massive (∼13 kg) than any previously observed carbonaceous fall. The Winchcombe meteorite survived entry because it was exposed to a very low peak atmospheric dynamic pressure (∼0.6 MPa) due to a fortuitous combination of entry parameters, notably low velocity (13.9 km s−1)." #meteorites

It’s Surprisingly Easy to Hurl Rocks From Mars Into Space https://www.universetoday.com/161220/its-surprisingly-easy-to-hurls-rocks-from-mars-into-space/ #martianmeteorites #meteorites #caltech #mars

Shock-recovered maskelynite indicates low-pressure ejection of #shergottites from #Mars: https://www.science.org/doi/10.1126/sciadv.adf2906 -> The Mysterious Origins of Martian #Meteorites: https://www.caltech.edu/about/news/the-mysterious-origins-of-martian-meteorites

The Mysterious Origins of Martian Meteorites

https://www.caltech.edu/about/news/the-mysterious-origins-of-martian-meteorites

Search over 1,500 astronomy and space news releases at www.stars-n-stuff.com/news-stories

#astronomy #space #science #news #stargazing #Mars #meteorites

Image: NASA

Magnets Are Bad News for Meteorites
https://skyandtelescope.org/astronomy-news/bad-news-magnets-and-meteorites/

Common handheld magnets can erase crucial data in ancient meteorites. The post Magnets Are Bad News for Meteorites appeared first on Sky & Telescope .
#Astronomy_&_Observing_News #Astronomy_Blogs #Astronomy_in_Space_with_David_Dickinson #Solar_System #meteorites

Spectral Diversity of Rocks and Soils in #Mastcam Observations Along the #Curiosity Rover's Traverse in #Gale Crater, Mars: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021JE007134 -> ‘Cacao’ meteorite and other Fe-Ni #meteorites on #Mars: https://geobites.org/cacao-meteorite-and-other-fe-ni-meteorites-on-mars/ -> https://astrobites.org/2023/04/29/cacao-meteorite-and-other-fe-ni-meteorites-on-mars/

Fresh #meteorites have been found in Germany north of #Hamburg after a daylight #fireball seen at noon two days ago: https://allsky7.groups.io/g/german/message/4564 = early report with videos, http://fireballs.imo.net/members/imo_view/event/2023/2341 and https://skywatcher.nachtlicht-buehne.de/observations#observation_902 = collected visual reports, https://allsky7.groups.io/g/german/message/4574 = the first two meteorites.

Latest VLOG. Simon Says: Rainbows & Hysteria
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IMDb: https://www.imdb.com/name/nm0279839/

#rainbow #salem #writer #actors
#pets #meteorites #anzacday #banana #harrypotter

A bounty hunt for some space rocks has now been posted! #Meteorites #Maine 😲

https://www.usnews.com/news/offbeat/articles/2023-04-12/space-race-meteorites-hit-maine-museum-offers-25k-reward

A common way to identify meteorites -- testing a specimen with a magnet -- destroys information about that meteorite's history.

' Vervelidou hopes that raising awareness will help convince hunters, collectors, and researchers to give up a technique that’s still promoted by the U.S. Geological Survey, universities, and popular meteorite hunting TV shows... “Why would you buy an amazing painting and then throw some sauce on it?”

#meteorites #PlanetaryScience #astronomy

https://www.science.org/content/article/magnets-wipe-memories-meteorites-erasing-billion-year-old-data

@ClaudiaZahn As I've started collecting earth #minerals besides my loved #meteorites and chemical elements I can say that I like the #flourescenting ones most. Currently at least.