Large supernova explosion may have been erased from prehistoric large basking sharks, scientists say



Religious stars may have been 2.6 million years ago on a major extinguishing event that overthrown the prehistoric Earth's oils which could erase creatures such as the large shark called Megalodon, according to a new scientific paper.

The cosmetic fragments from these supernovae show their surface; planet at such high levels researchers from the University of Kansas say that they have been caused by massive creatures to be able to; spice.

Among those who suffered from casualties the Megalodon – shark was as big as a bus – away from the fossil record around this time.

The theory was set out by a team led by Dr Adrian Melott, a physicist at the University of Kansas, in an attempt to enter the dots between different search lines.

"There is no real explanation for getting rid of a marine megafaunal," he said. "This may be the same. This change is changed – we know something has happened and when it has happened, and so for the first time we can & # 39; digging and looking for things in a decisive way. "

To reach this idea, Dr Melott drew on his knowledge of historical supernovae and evidence for his & her; their impact on Earth.

Seagulls of seabed from iron-isotope 60 – iron-ray-ray shape – and delivery of crucial importance are essential.

Producing the results in the magazine Astrobiology, Dr Melott said there was no other means for these materials to come to Earth except from supernova, which meant they gave the "slam dunk" evidence for those events to keep it.

Further support from the surrounding geography structure. The ground is located on the edge of something called the Local Bubble – a very hot division of intense, intense gas that reflects from a series of spreadhan supernovae – the explosion of the stars that have come to the end of their lives.

Due to the structure of this mill, it is possible that the ground be beaten in cosmetic rays, The blast left off the edges, for up to 100,000 years.

During this time, fragments known as mounds have fallen significantly on the surface of their planet.

Original ceramics like heavy electrons – deeply penetrate in living creatures; including people and are responsible for around one fifth of the radiation dose we receive.

This is usually not a big problem, but by showing a lot of hundreds of trips, Dr Melott and his colleagues believe that this could be increased in milking levels and cancer.

Larger animals were particularly susceptible, as they would have taken more radiation dose.

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"We measured the level of cancer would increase by about 50 per cent for a person size-and the more you are, the worst," said Dr Melott.

This could explain why Megalodon's failure, as well as a third of other great creatures, to the next story of the planet's planet, called the Pleistocene.

Previous work to supernovae suggestion around this time may also be killed by small essential creatures for health; ocean by damaging the ozone layer and its & # 39; allowing it to be UV light.

Dr Melott said his work was to highlight the impact of these star spreads during this important time in Earth's history "a bit of other puzzles".

Often, major events that are extinct are linked to major changes to Earth's climate, such as "The Great Dying" for 252 million years ago that have risen from the temperature and increased levels of oxygen levels. ; falling in the oceans.

Although cosmetic rays may have a & # 39; Changing the atmosphere is also tied to changing climate, the authors of the study admit that this is a "controversial bid".


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