We may not know what dark matter is, but we know one thing: it does not seem to have killed anyone by hammering – an event that would at least lead to serious injury. 
So you can remove this problem from your list of things to worry about in this worrying world. That's great and everything, but it was not the purpose of the form that describes these results.
According to physicists Jagjit Singh Sidhu and Glenn Starkman of Case Western Reserve University and Robert Scherrer of Vanderbilt University, the fact that no one died of an impact on dark matter allows us to put restrictions on the mysterious Apply material yourself.
"Our findings," they report, "open a new window on dark matter: the human body as a detector of dark matter."
Superficially, this sounds like a fairly exact science. At the moment we can all read her work titled "Death By Dark Matter" on the pre-print site arXiv, until she is also looked at by the scientific community and the peer review.
Dark matter continues to be a thorn in the eye of cosmology. We know that there is something out there that creates more gravity than can be explained by demonstrable matter. The way stars and galaxies move suggests that up to 85 percent of matter in the Universe is this mysterious, undetectable mass. We call it dark matter.
Researchers in search of dark matter have some pretty Whiz-Bang detectors and they've shown us some pretty amazing things. So far, however, there have been no conclusive discoveries of the material itself.
Another way to search for something is to find out what it is not . To ask here, if dark matter in people is like mysterious ghost space balls, could be a valuable question.
Macroscopic or macro-dark matter refers in particular to candidates for dark matter that would scatter normal matter elastically over a broad geometric cross. Section.
According to the team's calculations, there are particles of this dark matter ̵
"The most obvious analogy to a macro-collision with a human being is a bullet wound," the physicists write.
"Note that we are working with a very different range of projectile sizes and speeds than typical projectiles, macros typically have hyper-sound velocity but very small geometric cross-sections in our parameter range of interest (only 1 micron).
Therefore, their destructive effect is likely to be qualitatively different from that of a projectile. A macro-impact usually heats the tissue cylinder cut out on its way to a temperature of 10 million Kelvin, resulting in an expanding plasma cylinder in the body.
Wait. What .
It's fine, however, even with the use of a much more conservative benchmark for the effects – the muzzle force of a .22-rifle – have been seen in Europe, the US, and Canada has not observed macro-related deaths over a 10-year period.
These results limit macros detectable on Earth to a physical size of a few microns and a mass of about 50 kilograms Body still needs to be investigated, but it is possible that this is the case Again, this may be limited in the future.
Some of these candidates for dark matter still need to be investigated, although in two separate works a weak interaction between massive particles (WIMPs) is unlikely to cause cancer in humans.
W We all get better information for this information sleep
The work of the team can be found on the pre-print website arXiv.