We’ve been seeing lots of comments and questions about dark matter
that matter that makes up 23 percent of the stuff in the universe.
But we can’t see it and have no idea what it is.
Well, this week we got a big step closer to understanding that stuff better
with the discovery of new particles called majorana fermion.
This articles first theorized by Italian physicist and kinda crazy dude Ettore Majorana
who in the nineteen thirties propose that
if anti-matter exists, that is
for every particle there is a mirror opposite with the opposite charge
and there must also be a particle that is its own antiparticle.
I don’t know this concept totally blew his mind or what.
But soon after he proposed it Majorana mysteriously disappeared
after boarding a boat for sicily never to be seen again
Seriously， now fast forward to this week when Dutch physicists say that
they might have solved majorana’s conundrum by finally detecting traces of this strange particle.
I’m gonna tell you how they did this
Don’t worry if you don’t understand
the team connected the low choice of wire to the super conductor
ran current electron through it
and then exposed it to a magnetic fieldbut they found weren’t bits of matter.
But rather two groups of electrons that began acting the same way
and the same time as majorana predicted, trust me.
It’s big deal since these particles existon the brink of matter and anti-matter
某些物理学家认为它们或许是暗物质的主要成分 此若属实 这将开启物理学新篇章
Some physicists think that they could be the key ingredient of dark matter which if true would change everything.
Majorana, we finally have news for you come home.
New research led by the former director of the space shuttle program JosephMiller suggested
the Viking landers may in fact have found life on Mars
after all study looked the
data from all four of the tests that the landers performed on the Martian soil in 1976
only one came back positive nutrients with the radioactive signature were added to soil samples
and some of those samples gave off gas with the same signature
suggesting the nutrients had been metabolized another test looking for
large amounts of organic molecules
and the signs of photosynthesis seemed to come back negatives.
So the conclusion was
No life on Mars
All the new study doesn’t question how the experiments were done
but rather how the numbers were crunched
using an approach called complexity analysis.
Experts compared all the Viking datawith similar experiments done on earth soil
in sort through them by which were the most mathematically complex
the date form the wiking nutrient experiment and the grouping together with date from the earthlier experiments
meaning they were more complex than the data from the negative results
the team is thinking that any biological system
even if it massively different from one would found on earth
would still be much more complex than non-biological ones. So 36 years later
We may have figured out life on Mars.
There is still a lot that viking is teaching us.
但坏消息是 只有我们再次回到火星 才能知道了
Bad news is we’re never gonna really know until we go back.
请在脸书和推特上告诉我们你的看法 也可以在 视频下方评论
but what you think let us know on Facebook Twitter or in the comments below
And we’ll see you next week