Starship Asterisk*

by **Chappy** » Sat Feb 08, 2014 3:38 am

I would not have guessed that would've happened, I thought droplets would fly away in all directions. A very cool experiment girls, congrats on suggesting it!
The wicking shown in the coffee clip is also very informative as I've often wondered how fuel in solid tanks behaved in zero G.
As a bunch here are, I am also a very proud Canuck from the Province with the longest single word name!
Shout out to all the other Canucks here

Dave

by **ErnieM** » Fri Apr 26, 2013 7:24 pm

rstevenson wrote:
Whiskybreath wrote:Canadians in space? Whatever next?
You are apparently unaware that we control the world.

Rob

Here is more about "The Man Who Tweetted Earth" Chris Hadfield answers questions during a news conference.
Photo: THE CANADIAN PRESS/Paul Chiasson

"Chris Hadfield is making us love space again.

He tweets, snaps stunning photos, and regularly connects with folks back home as he hurtles around the earth at 28,000 km an hour aboard the International Space Station.

Hadfield is the first Canadian commander ever of one of the most complex and sophisticated examples of human technology ever built.

Bigger than five hockey rinks, the ISS is a giant floating laboratory that’s been orbiting the earth non-stop for 15 years. From the ground, it looks like an incredibly bright, fast moving star. But this fixture in the sky has been a mystery to many - until now.

Most of us can only imagine what the astronauts aboard have experienced. The distance has made it seem unknowable.

But last December that all changed. From the moment Hadfield arrived at the ISS for a 5 month mission, he transformed the way we connect to space

Millions are following his every move. His YouTube videos go viral. The Queen and Captain Kirk send him messages.

His folksy Renaissance man shoutouts have given this mission an unprecedented profile. And move over David Bowie – Hadfield’s wry takes on the mundane to the amazing have made him a rock star in space.

To watch the film http://www.cbc.ca/natureofthings/episod ... earth.html"

To watch more of his space photo http://www.huffingtonpost.ca/2013/04/25 ... 54722.html

Ernie
another proud fellow Canadian

by **neufer** » Thu Apr 25, 2013 3:38 pm

Any resemblance between Sterling Hayden & myself is purely coincidental.

by **stephen63** » Thu Apr 25, 2013 3:00 pm

neufer wrote: Well, if that were to happen, at least the bodily fluids would remain with the remains.

Click to play embedded YouTube video.

by **neufer** » Thu Apr 25, 2013 2:00 pm

DavidLeodis wrote:
The wiring on the International Space Station does look 'untidy'.
I hope nobody gets caught in it but I wonder what would happen if they do .

I presume it is possible to be strangled in weightlessness.

Well, if that were to happen, at least the bodily fluids would remain with the remains.

by **DavidLeodis** » Thu Apr 25, 2013 11:05 am

Wow that is a fascinating experiment and video. Almost eerie seeing the water over Chris's hands.

The wiring on the International Space Station does look 'untidy'. I hope nobody gets caught in it but I wonder what would happen if they do

. I presume it is possible to be strangled in weightlessness.

by **JohnD** » Wed Apr 24, 2013 9:28 pm

[quote="Boomer12k A positive charged nucleus, a negative charged membrane. (except blood cells, which have no nucleus evidently.) [/quote]

Ummmmmm.
Not quite the whole picture, Boomer.
The cell membrane contains ion pump protein complexes that remove Sodium from the cell and push Potassium in. The balance of this ion exchnage is not equal, so the inside of the cell is negative in relation to the outside. This 'resting potential' is about 50mV.
The nucleus has the same bilipid layer as the cell membrane around it, again dotted with ion pumps, that maintain a resting potential across the nuclear membrane, but at only 15mV, with again positive on the outside.
So I'm afraid for you that the attractive idea of a negative outside with a positive nucleus isn't true. That's atoms!
The cell is positive on the outside and negative on the inside of its outer memberane, and the nucleus at its membrane is the same!

John

by **neufer** » Wed Apr 24, 2013 8:47 pm

Click to play embedded YouTube video.

NoelC wrote:What fun!

Training aside, I wonder how long it takes to get used to how different everything is in a zero-G environment.

-Noel

by **NoelC** » Wed Apr 24, 2013 6:48 pm

What fun!

Training aside, I wonder how long it takes to get used to how different everything is in a zero-G environment.

-Noel

by **Beyond** » Wed Apr 24, 2013 6:16 pm

Sounds wet to me

Good gurgling, Boomer 12k.

by **Boomer12k** » Wed Apr 24, 2013 5:49 pm

Ann wrote:This is a really fun and thought-provoking video. I'm not exactly sure how, but I can't help thinking that this video says something about why water is so essential to life on Earth. Between the gravity of the Earth and the surface tension of liquid water, this fluid is just the ticket for biological life on Earth!

Ann

Water is a solvent. It helps break things down, so they can mingle chemically. So water is a medium. I think the surface tension helps hold on to things. Cells have electricity. A positive charged nucleus, a negative charged membrane. (except blood cells, which have no nucleus evidently.) Water conducts electricity....thus it is essential to the working of the cell, and chemistry of the body, and other life as well...Life is CELLS...A Cell is the Quantum of life. Best invention/adaptation in the Universe? Cellulose...The most common organic compound on Earth. A skin to hold water, and the nucleus, and allows the flow of energy, and nutrients from the body systems to all the cells...the biggest Miracle...GOTTA HAVE A CONTAINER!!!!!

Gravity would help with the mixing...static weightlessness would have no motion...

My opinion and observation.
:---[===] *

by **SevenEagles** » Wed Apr 24, 2013 5:08 pm

Nice manicure.

by **neufer** » Wed Apr 24, 2013 3:53 pm

Click to play embedded YouTube video.

LocalColor wrote:
JohnD wrote:
As was said in the video and here, great experiment!

Commander Hadfield complimented "Meredith and Kendrick" on their suggestion, so I think they should get a credit here too!

School kids? Well done!
Smart kids, great experiment and enjoyable video!

by **LocalColor** » Wed Apr 24, 2013 3:45 pm

Smart kids, great experiment and enjoyable video!

by **JohnD** » Wed Apr 24, 2013 3:16 pm

As was said in the video and here, great experiment!

Commander Hadfield complimented "Meredith and Kendrick" on their suggestion, so I think they should get a credit here too!
School kids? Well done!

John

by **oerz** » Wed Apr 24, 2013 3:01 pm

What I am wondering is whether Commander Chris Hadfield's wrist watch was fitting snugly when he left earth. If so, I am amazed how much loses muscle mass in space!

by **neufer** » Wed Apr 24, 2013 2:47 pm

H Wheeler wrote:
Thinking about swimming in a swimming pool in space for the first time is pretty funny. Would it stick to the walls and create a breathable space in the middle or create a big bubble in the middle that bounces off the walls as the swimmer tries to get into the water?

http://www.watoday.com.au/technology/sci-tech/a-first-for-fish-in-space-20120731-23bol.html wrote:
[b][color=#0000FF]A specimen chamber housing Medaka fish for study in the Aquatic Habitat. Photo: JAXA[/color][/b]
"A first for fish in space"
James W. Manning, WAtoday, July 31, 2012

<<The Japanese Space Agency (JAXA) has sent an aquarium to the International Space Station. No, this isn't a veiled attempt at turning the ISS into some kind of swanky bachelor pad, but rather an experiment that will study the effects of microgravity on marine life. Specifically, researchers will examine the impacts of radiation, bone degradation, muscle atrophy and developmental biology over a three-month period. This data may improve understanding of human health in these areas back on Earth.

"We think studies on bone degradation mechanisms and muscle atrophy mechanisms are applicable to human health problems, especially for the ageing society," said Nobuyoshi Fujimoto, associate senior engineer at JAXA.

Scientists will examine small, freshwater fish in orbit, starting with the Medaka fish (Oryzias latipes). Medaka are ideal specimens because they are transparent, which makes light work of observing the workings of their inner organs. They are also quick breeders, allowing the studies to examine different generations of the fish. The animal's genome is already fully sequenced, making it easy to recognises changes in their genes.

The Aquatic Habitat, or AQH, was sent into space on July 20 [2012] and will reside in the Japanese Experiment Module, also known as 'Kibo', which is Japanese for 'hope'. While water habitats have been sent into space before, this system features an improved circulation system that monitors water conditions, removes waste and improves oxygen flow. The habitat also includes temperature control and an automatic feeding system for the fish, while day and night cycles will be simulated by LED lighting. Video cameras will stream vision of the fish back to Earth for further analysis. "The special bacteria filter purifies waste materials, such as ammonia, so that we can keep fish for up to 90 days," said Mr Fujimoto. "This capability will make it possible for egg-to-egg breeding aboard station, which means up to three generations may be born in orbit. This would be a first [for fish] in space."

If space fish aren't quite cool enough for you, space frogs could be next on the agenda. The air-water interface design of the Aquatic Habitat makes it possible to house amphibious animals too.>>

by **H Wheeler** » Wed Apr 24, 2013 1:55 pm

Thinking about swimming in a swimming pool in space for the first time is pretty funny. Would it stick to the walls and create a breathable space in the middle or create a big bubble in the middle that bounces off the walls as the swimmer tries to get into the water?

by **Psnarf** » Wed Apr 24, 2013 12:43 pm

When I first viewed this video a couple of days ago, I guessed that small water globules would squirt out in all directions, much like the two-dimensional spray on earth rotated 360-d about the horizontal axis of the towel. I should have known that the surface tension of water would have interfered with that, having once calibrated a surface tensiometer sensitive to the local gravitational force. How soon we forget!

(Any loose water droplets would end up in the air intake vents and filtered out.)

by **neufer** » Wed Apr 24, 2013 12:33 pm

Click to play embedded YouTube video.

rstevenson wrote:
Whiskybreath wrote:
Canadians in space? Whatever next?
You are apparently unaware that we control the world.

Rob

In the future, perhaps.

by **rstevenson** » Wed Apr 24, 2013 12:31 pm

Whiskybreath wrote:Canadians in space? Whatever next?

You are apparently unaware that we control the world.

Rob

by **Whiskybreath** » Wed Apr 24, 2013 11:37 am

Canadians in space? Whatever next?

by **neufer** » Wed Apr 24, 2013 11:24 am

bystander wrote: http://asterisk.apod.com/viewtopic.php?t=31154

"Hey, you sass that hoopy Ford Prefect? There's a frood who really knows where his towel is." ~ Douglas Adams

"A towel, it says, is about the most massively useful thing an interstellar hitchhiker can have. Partly it has great practical value - you can wrap it around you for warmth as you bound across the cold moons of Jaglan Beta; you can lie on it on the brilliant marble-sanded beaches of Santraginus V, inhaling the heady sea vapours; you can sleep under it beneath the stars which shine so redly on the desert world of Kakrafoon; use it to sail a mini raft down the slow heavy river Moth; wet it for use in hand-to- hand-combat; wrap it round your head to ward off noxious fumes or to avoid the gaze of the Ravenous Bugblatter Beast of Traal (a mindboggingly stupid animal, it assumes that if you can't see it, it can't see you - daft as a bush, but very ravenous); you can wave your towel in emergencies as a distress signal, and of course dry yourself off with it if it still seems to be clean enough.

More importantly, a towel has immense psychological value. For some reason, if a strag (strag: non-hitch hiker) discovers that a hitch hiker has his towel with him, he will automatically assume that he is also in possession of a toothbrush, face flannel, soap, tin of biscuits, flask, compass, map, ball of string, gnat spray, wet weather gear, space suit etc., etc. Furthermore, the strag will then happily lend the hitch hiker any of these or a dozen other items that the hitch hiker might accidentally have "lost". What the strag will think is that any man who can hitch the length and breadth of the galaxy, rough it, slum it, struggle against terrible odds, win through, and still knows where his towel is is clearly a man to be reckoned with."

by **Beyond** » Wed Apr 24, 2013 11:23 am

Maybe that's why humans are mostly water. I would imagine that it is that way for all the other critters also, but have only seen it expressed for humans. So if you are a physical BEing, then you are mostly all wet.

by **Ann** » Wed Apr 24, 2013 9:08 am

This is a really fun and thought-provoking video. I'm not exactly sure how, but I can't help thinking that this video says something about why water is so essential to life on Earth. Between the gravity of the Earth and the surface tension of liquid water, this fluid is just the ticket for biological life on Earth!

Ann

Starship Asterisk*

APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Post a reply

Expand view Topic review: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Medaka Box

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)

Re: APOD: Wringing a Wet Towel in Orbit (2013 Apr 24)