Show threadSpaceflight 🚀Mar 10
Roughly 1,600 tons of #micrometeorites and 3,600 tons of cosmic spherules reach the surface every year. Lower density and higher porosity suggest a #cometary ☄️ origin, and higher density and lower porosity suggest a #meteoritic origin https://www.sciencealert.com/5-200-tons-of-micrometeorites-are-raining-down-on-earth-s-surface-every-year
5,200 Tons of Extraterrestrial Dust Rain Down on Earth Every Single Year

We've known for a while that Earth is under a constant rain of space dust, and that it's copious.

ScienceAlert
Jan HelebrantOct 27
různé druhy vltavínu, sbírky Národního Muzea v Praze / various types of #moldavite, collections of the National Museum in #Prague
https://www.flickr.com/photos/96541566@N06/54883982991/
#vltavin #tektite #meteoritic #glass #gemstone #Czechia #education #exhibition
Jens NotroffAug 9, 2023

Crom on his mountain sent fiery stone for strong arrows! 🏹

B. Hofmann et. al, An #arrowhead made of #meteoritic iron from the late #BronzeAge settlement of #Mörigen, Switzerland and its possible source, Journal of Archaeological Science 157, 2023. 🔓

https://www.sciencedirect.com/science/article/pii/S0305440323001073

CellBioNewsMay 25, 2023

#Meteoritic and #volcanic particles may have promoted #origin_of_life reactions.

#evolution #prebiotic #abiogenesis

https://phys.org/news/2023-05-meteoritic-volcanic-particles-life-reactions.html

Meteoritic and volcanic particles may have promoted origin of life reactions

Precursors of the molecules needed for the origin of life may have been generated by chemical reactions promoted by iron-rich particles from meteors or volcanic eruptions on Earth approximately 4.4 billion years ago, according to a study published in Scientific Reports.

Phys.org