Scientists have found signs that Earth has another layer — a metal ball inside the inner core.
of a new layer to the planet sitting within the inner core. This "innermost inner core" is an iron-nickel alloy ball that, as professor Hrvoje Tkalčić explains, is a "fossilized record" of Earth's ancient history. Until now, science had only recognized four layers .
The scientists found the 'hidden' core by studying seismic waves that traveled back and forth across the Earth's entire diameter up to five times — previous studies only looked at single bounces. The earthquake waves probed places near the center at angles that suggested a different crystalline structure inside the innermost layer. Effectively, the alloy is skewing the travel times for the waves as they pass through.
The findings open up new ways to investigate the inner core, according to lead author Thanh-Son Phạm. ANU also believes the innermost inner core hints at a major event in Earth's past that had a "significant" impact on the planet's heart. As researchers, it could also help explain the formation of the Earth's magnetic field. The field plays a major role in supporting life as it shields the Earth from harmful radiation and keeps water from drifting into space.
Those insights may help with studies of other worlds. Mars is believed to be a barren planet because it
Österreich Neuesten Nachrichten, Österreich Schlagzeilen
Similar News:Sie können auch ähnliche Nachrichten wie diese lesen, die wir aus anderen Nachrichtenquellen gesammelt haben.
Scientists find evidence of a new layer at the Earth's inner core | EngadgetScientists have found signs that Earth has another layer — a metal ball inside the inner core..
Weiterlesen »
Scientists have discovered a new core at the center of the EarthA pair of seismologists documented new evidence of a fifth layer: a 400-mile thick solid metallic ball at the center of Earth’s inner core — like the smallest figurine of a massive, planetary Russian nesting doll set.
Weiterlesen »
Scientists discover core deep inside Earth — a solid ball of iron and nickelA study of Earth’s deep interior, based on the behavior of seismic waves from earthquakes, confirmed the existence of a distinct structure inside our planet’s inner core — a wickedly hot solid ball of iron and nickel about 800 miles wide, researchers say.
Weiterlesen »
Earthquakes reveal odd 'fluid' rock layer in Earth's solid mantleA new study demonstrated the potential existance of a fluid rock layer at the very bottom of the upper mantle, that may be ring the entire planet.
Weiterlesen »
Deep Earthquakes Reveal Shocking Secrets of the Inner Earth350-mile-deep earthquake used in scientific study to make elusive measurements of the Earth’s layers. There may be a layer of surprisingly fluid rock ringing the Earth, at the very bottom of the upper mantle, according to a new study from a University of Chicago scientist. The finding was made
Weiterlesen »
Surprisingly Massive Galaxies Found by Space Telescope Is a 'Universe Breaker,' Scientists Say“The revelation that massive galaxy formation began extremely early in the history of the universe upends what many of us had thought was settled science,” said Pennsylvania State University’s Joel Leja, who took part in the study.
Weiterlesen »