Bilim insanları, asteroid çarpmalarıyla uzaya savrulan kaya parçalarının içinde mikroskobik canlıların hayatta kalabileceğini ve yaşamın gezegenler arası transferini sağlayabileceğini kanıtladı. Mars’tan Dünya’ya yaşam taşınmış olabileceği teorisi, laboratuvar deneyleriyle desteklendi. Bu keşif, yaşamın kökeni ve uzaydaki izleri hakkında yeni sorular doğuruyor.

#Panspermia
#LifeFromSpace
#MarsToEarth
#SpaceMicrobes
#OriginOfLife

Investigating the Geographical Origins of First Life on Earth

Where did life on Earth start first? Scientists look at deep oceans and volcanoes to find out if we will find life on Mars or other moons.

#originoflife, #deepseavents, #volcanicpools, #nasamars, #earlyearth

https://newsletter.tf/where-did-life-on-earth-start-first-ocean-vs-volcano/

Scientists are choosing between the deep ocean and land volcanoes for the start of life. This choice tells us if we should look for aliens on Mars or icy moons.

#originoflife, #deepseavents, #volcanicpools, #nasamars, #earlyearth

https://newsletter.tf/where-did-life-on-earth-start-first-ocean-vs-volcano/

By constructing family trees of the oldest and most divergent forms of life, phylogeneticists have tried to push back to the last universal common ancestor (LUCA).

https://aeon.co/essays/life-on-earth-emerged-fast-far-quicker-than-we-thought

One such attempt created a family tree of 102 species, focusing on microorganisms, as those are the oldest forms of life. They calibrated their tree using 11 dates known from the fossil record. The headline finding was that LUCA was at least 3.9 billion years old.

In 2024, many of the same researchers returned with a more detailed analysis of LUCA based on more than 3,500 modern genomes. This suggested LUCA lived between 4.09 and 4.33 billion years ago, with a best estimate of around 4.2 billion.

#life #originoflife #fossils #biochemistry

Her groundbreaking theory on the #originoflife was rejected 15 times. Then #biology proved her right.

https://www.upworthy.com/lynn-margulis-symbiosis