[Histoire] La météorite Benld

[Jean-Jacques Wawrzyniak]

Le récit d'une météorite tombée en 1938 et dont on a estimé la provenance grâce .....

https://astronomy.com/news/2020/09/the-benld-meteorite

JJ

[Abderrazak Boukhris]

Disons que c'est un premier essai d'estimation de la provenance, l'article dit que Wilson, le scientifique intervenu en premier sur ce cas, a fini par se rendre compte qu'il était vain d’essayer de pointer une région d'origine particulière.

Today, we know that most meteorites originate in the asteroid belt; but in 1938, their origin was still a mystery. Wilson realized that the line he measured probably did not point exactly to the Benld meteorite's origin. As the space rock reached terminal velocity in Earth's atmosphere, its trajectory would have dropped more steeply. Also, since it had no apex, it might have tumbled as it fell, possibly following a disruption in the upper atmosphere. Wilson put out a call to other amateur organizations, seeking additional observations of the fall in hopes of discovering its origin, but without success.

Toujours positif ce Wilson