Journey to the Microcosmos

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Journey to the Microcosmos

#1  Postby Spearthrower » Jul 13, 2019 1:32 pm

https://www.youtube.com/watch?v=wS2mdmt4JPw

A new Youtube channel created in partnership with Hank Green (SciShow & Crash Course) looks like it's going to be well worth watching. A trip into the microcosmic world of prokaryotes and single-celled eukaryotes with highly magnified high-quality video; the 3 videos already up are absolutely fascinating and I've watched them all multiple times already! :cheers:
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Re: Journey to the Microcosmos

#2  Postby Keep It Real » Jul 13, 2019 2:23 pm

Very cool stuff 8-)
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Re: Journey to the Microcosmos

#3  Postby newolder » Jul 13, 2019 2:38 pm

Something for when the Tour stage is done for the day. :popcorn:
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Re: Journey to the Microcosmos

#4  Postby Ironclad » Jul 13, 2019 9:41 pm

I need to take a shower, in bleach.
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Re: Journey to the Microcosmos

#5  Postby laklak » Jul 14, 2019 3:57 am

Whats the use? We live in a fucking toilet. We're covered in shit and germs 24/7.
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Re: Journey to the Microcosmos

#6  Postby BlackBart » Jul 14, 2019 5:18 am

laklak wrote:Whats the use? We live in a fucking toilet. We're covered in shit and germs 24/7.


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Re: Journey to the Microcosmos

#7  Postby Spearthrower » Jul 29, 2019 8:30 pm

Tardigrades this week... my favourite! :)
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Re: Journey to the Microcosmos

#8  Postby Ironclad » Jul 29, 2019 11:13 pm

Want!
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Re: Journey to the Microcosmos

#9  Postby Spearthrower » Jul 30, 2019 3:52 pm

I managed to find some of these today on some moss I've been growing expressly to provide a habitat for them. My microscope's clarity is nowhere near as good as this though, but at least it's giving my son some sense of the wonder there: worlds within worlds.
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Re: Journey to the Microcosmos

#10  Postby newolder » Jul 30, 2019 4:18 pm

How many (thousands of) species tardigrade in the clade that is separate from all others? :shock: :shock: (Double shock at the species count AND the apparent separation.)
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Re: Journey to the Microcosmos

#11  Postby Spearthrower » Jul 30, 2019 5:12 pm

newolder wrote:How many (thousands of) species tardigrade in the clade that is separate from all others? :shock: :shock: (Double shock at the species count AND the apparent separation.)


It's awe-inspiring to think about, isn't it? In some ancient population, one faction splintered left and became tardigrades, while the other faction splintered right and became... basically everything else! :lol:

But then again, it's fairly typical of some of the more difficult to classify species - basically, shove it in a placeholder category until we get a new angle on it.
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Re: Journey to the Microcosmos

#12  Postby Ironclad » Jul 30, 2019 11:44 pm

You can see these!? What power scope do you have?
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Re: Journey to the Microcosmos

#13  Postby Spearthrower » Jul 31, 2019 12:17 am

Ironclad wrote:You can see these!? What power scope do you have?


It's a kid's one (EduScience range) I bought for my son (I'd love to buy something more powerful and expensive one day for me) so the eye piece is up to 16x and the objective is up to 40x - waaaay more than you need for a 0.5 mm tardigrade! You probably only need about 50x total magnification to see them really clearly in detail - which is little magnification even for the cheapest microscope - perhaps a little more if you want to see details on their cuticle. Even with this kid's microscope, I can see what they had for lunch. :grin:
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Re: Journey to the Microcosmos

#14  Postby Ironclad » Jul 31, 2019 10:52 am

Oh ok then. I thought we'd need a major scope
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Re: Journey to the Microcosmos

#15  Postby Spearthrower » Jul 31, 2019 11:52 am

The largest, apparently, you could see with the naked eye as they can be over 1mm long. But I've not yet managed that. I have to rove about in lower magnification to find bloops first before zooming in.
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Re: Journey to the Microcosmos

#16  Postby newolder » Jul 31, 2019 12:20 pm

Just reading this Science Alert note on the tardigrade and it seems, at this early stage, that we shouldn't be reaching too many conclusions about them...

The Tardigrade Genome Has Been Sequenced, And It's Even Weirder Than We Thought

FIONA MACDONALD 25 NOV 2015
...

But the new research has shown that approximately 6,000 of the tardigrade’s genes come from foreign species, which equates to around 17.5 percent (of its genome).

...
{and that ends with}

Update 10 December 2015: A separate team of researchers in Scotland has also sequenced the tardigrade genome, and found at most 500 genes from foreign species. They concluded that the original researchers might have inadvertently sequenced DNA from bacteria living alongside the tardigrades. Further research is needed to confirm just how foreign the water bear's genome really is. Watch this space.
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Re: Journey to the Microcosmos

#17  Postby The_Piper » Jul 31, 2019 6:44 pm

Spearthrower wrote:https://www.youtube.com/watch?v=wS2mdmt4JPw

A new Youtube channel created in partnership with Hank Green (SciShow & Crash Course) looks like it's going to be well worth watching. A trip into the microcosmic world of prokaryotes and single-celled eukaryotes with highly magnified high-quality video; the 3 videos already up are absolutely fascinating and I've watched them all multiple times already! :cheers:

You forgot PBS Eons, he's on there too. :) Montana's kicking ass! (their location)
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Re: Journey to the Microcosmos

#18  Postby Spearthrower » Jul 31, 2019 9:41 pm

newolder wrote:Just reading this Science Alert note on the tardigrade ...



Good article, and I especially love their little tardigrade animation - really well done, although it does make the tardigrade look a bit like a vertebrate in some frames.
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Re: Journey to the Microcosmos

#19  Postby CdesignProponentsist » Aug 01, 2019 12:11 am

Subbed. Thanks for the suggestion!
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Re: Journey to the Microcosmos

#20  Postby newolder » Aug 06, 2019 6:35 pm

In today's tardigrade news...
Thousands of Tardigrades Stranded on the Moon After Lunar Lander Crash

When you look up at the moon, there may now be a few thousand water bears looking back at you.

The Israeli spacecraft Beresheet crashed into the moon during a failed landing attempt on April 11. In doing so, it may have strewn the lunar surface with thousands of dehydrated tardigrades, Wired reported yesterday (Aug. 5).

Beresheet was a robotic lander. Though it didn't transport astronauts, it carried human DNA samples, along with the aforementioned tardigradesand 30 million very small digitized pages of information about human society and culture. However, it's unknown if the archive — and the water bears — survived the explosive impact when Beresheet crashed, according to Wired.
...

Continues @ space.com link
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