Where the asteroid belt is located today, there was a mysterious hole in the early solar system. »Wire

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Where the asteroid belt is located today, there was a mysterious hole in the early solar system.

If you go back a few billion years on the cosmic clock, our solar system would look very different from what it is today. The young Sun was shining like it does now about 4.5 billion years ago, although it was a bit smaller. He was enveloped in a spinning disk of gas and dust, rather than being surrounded by planets. Planets eventually formed on this disc, known as the protoplanetary disc.

Between where we are today and where the asteroid belt is today, there was a noticeable gap in the protoplanetary disk of the early Solar System. It is not known what generated the sinkhole, but scientists believe it is a sign of the processes that regulate the creation of the planet.

The discovery of this ancient loophole was detailed in a study published by a group of scientists. Cauê Borlina, doctoral student in planetary sciences. a student in the Department of Earth, Atmospheric, and Planetary Sciences (EAPS) at the Massachusetts Institute of Technology, is the lead author (). “Paleomagnetic evidence for a disk substructure in the early solar system,” reads the title of the research. It was published in the journal Science Advances.

Astronomers are increasingly studying younger solar systems that still have protoplanetary disks and developing planets through facilities such as the Atacama Large Millimeter / Sub Millimeter Array (). They often have visible gaps and rings, which are evidence of the formation of the planets. But exactly how it all works remains a mystery.

“Observations over the past decade have revealed that cavities, vacancies, and rings are prevalent in disks around other young stars,” says Benjamin Weiss, research co-author and professor of planetary science in the Department. of Earth, Atmospheric and Planetary Sciences (EAPS). “These are critical but poorly understood fingerprints of the physical processes that turn gas and dust into the early sun and planets.” Meteorites provided evidence of a gap in our solar system’s protoplanetary disk about 4.5 billion years ago.

The magnetic fields of the solar system have had an impact on the structure of meteorites. The small rocks called chondrules in the protoplanetary disc were sculpted by paleomagnetism. Chondrules are molten or partially molten round rock fragments that have accumulated into chondrites, a form of meteorite. And chondrites are among the oldest rocks in the solar system.

The magnetic fields of the time were recorded in the chondrums as they cooled. As the protoplanetary disk evolves, these magnetic fields vary. Positioning… Summary of the latest news from Brinkwire.


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