Tech UPTechnologyDid meteorites sow life on Earth?

Did meteorites sow life on Earth?

asteroides-choque Analysis of a meteorite found in Antarctica offers new arguments for the hypothesis that these celestial bodies played a key role in the development of life on Earth .

The researchers, led by Sandra Pizzarello, from Arizona State University (USA), collected dust from the meteorite Grave Nunataks 95229 (found in 1995) and treated it with water at high temperature and pressure. In this way, they verified that it emitted ammonium (NH4), an important precursor of complex biological molecules such as amino acids and DNA, into the surrounding water. They then analyzed the nitrogen atoms within the ammonium and determined that the atomic isotope did not correspond to those discovered on Earth today, suggesting that the ammonia did not come from ground contamination.

"Since meteorites and comets have reached Earth since it was formed, the exogenous influx of these bodies was able to provide the organic material necessary for life to emerge," the authors conclude in the journal Proceedings of the National Academy of Sciences ( PNAS ). .

Schedules of the Valencia GP of MotoGP in Cheste and how to see it

The Cheste circuit hosts this weekend, from November 4 to 6, the 2022 MotoGP Comunitat Valenciana GP. See the schedules and all the information.

"Don't talk to me!": Danni Büchner makes a clear announcement to hated party guests

Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.

King Charles III Portrait now on the first coin: Serious change to the Queen

Charles III first coins with his portrait are there. Coin lovers immediately discover two striking differences.

Unknown colourfulness

Bird Species Discovered on Islands in Indonesia

Braking was tricky

Apart from that, everything worked like a picture book for the railway world record in Switzerland