ich weis nicht ob das hier schon jemand verlinkt hat, aber in Kuba ist offenbar vor kurzem ein doch größerer Meteorit von der Größenordnung Tscheljabinsk niedergegangen, mit Rauchfahne und incl. Druckwellen Knall. Könnte ja jemanden interessieren. An mir ist das Thema völlig vorübergegangen, da in den Medien gar nicht davon berichtet wurde, habe nur durch Zufall davon erfahren.
Several meteorites have been found in western Cuba after a huge meteor was seen by many – in broad daylight – on Friday, February 1, 2019. People in southern Florida also saw the meteor, as well as observers in the Florida Keys, and from Viñales, a town in Pinar del Río, Cuba.
The event occurred at around 1:16 – 1:17 p.m. EST on Friday, February 1, 2019. Residents of Viñales, Cuba saw a very long smoke trail that lasted more than one minute, while the meteor itself was described as extremely bright, with a yellow-orange color, and lasted more than at least four seconds.
Update (Feb. 12, 2019): Although a preliminary trajectory from northeast to southwest was calculated based on sightings reports by witnesses, a team of astronomers of the Institute of Physics of the University of Antioquia, led by Jorge I. Zuluaga, reconstructed the trajectory. An analysis of a few videos of the meteor shows the space rock’s trajectory was from south-southwest of Cuba to north, ending just north of Viñales, Cuba. This means the meteor was really bright, enough to be seen from some areas in Florida.
Several Cuban residents reported finding black rocks showing the characteristic fusion crust seen in ordinary chondrite meteorites.
Astronomers estimate that the space rock that disintegrated over Cuba was at least a few meters in diameter – likely, van-sized – before entering Earth’s atmosphere. That’s a lot smaller than the house-sized asteroid that entered Earth’s atmosphere over Chelyabinsk, Russia – also in February- in 2013.
Vorsicht, ich schreibe vereinfacht ohne Wurzelzeichen ³x=³√x , wenig Klammern 1/4r²π=1/(4r²π) , statt Vektorpfeil v¹=v⃗ Funktionen bzw Argumente werden durch einen Punkt angezeigt f.(x)=f(x)