The snow held significant amounts of a form of iron that isn’t naturally produced on Earth.
-- A team of scientists hauled 500 kilograms of fresh snow back from Antarctica, melted it, and sifted through the particles that remained. Their analysis yielded a surprise:
Outer space objects ranging from dust to meteors regularly fall to Earth, but they are generally made of the same materials as our planet, since everything in the solar system, including the sun itself, assembled from the same building blocks billions of years ago. Because iron-60 is not among those common materials, it must have arrived from somewhere beyond the solar system.
What was left was hundreds of times more of the iron isotope than they expected."That’s really overwhelming," Koll said. Stars fling out a variety of tiny particles during their lifetimes, in addition to all the light and heat. But when the stars are younger, they’re generally throwing out lighter metals, like carbon and oxygen. Aging, massive stars and a certain type of supernova explosions, having spent many millennia fusing big nuclei into even bigger ones, can spew out particles of heavier metals, including iron-60 and its stable cousin, iron-56.
México Últimas Noticias, México Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
15 TV Show Tributes to Cast Members Who DiedA number of shows have found a way to handle the loss of a beloved co-star.
Leer más »
Brazil’s President: We Don’t Have The Resources To Fight Amazon Rain Forest FiresBrazil President Jair Bolsonaro said the country lacks the resources needed to fight the fires raging in the Amazon by rachsandl
Leer más »
Russia rocket accident likely had two explosions, Norway monitor saysAn explosion that killed five Russian scientists during a rocket engine test thi...
Leer más »
Brazil’s President: We Don’t Have The Resources To Fight Amazon Rainforest FiresScientists have blamed humans, not natural causes, for the blazes.
Leer más »
Brazil’s President: We Don’t Have The Resources To Fight Amazon Rainforest FiresScientists have blamed humans, not natural causes, for the blazes.
Leer más »