Science, General Stuff

User avatar
Tiredretiredlawyer
Posts: 6723
Joined: Tue May 10, 2016 2:56 pm
Location: Animal Planet
Occupation: Permanent probationary slave to 2 dogs, 1 cat, and 1 horse

Re: Science, General Stuff

#1126

Post by Tiredretiredlawyer » Tue Nov 21, 2017 11:24 am

RTH10260 wrote:
Mon Nov 20, 2017 10:58 pm
Foggy wrote:
Mon Nov 20, 2017 6:32 pm
I think the word "cool" may be a relative term there ... :think:
Never forget to bring a yuuge bbq steak along on your interstellar travels ;)
:rotflmao:


"The people must know before they can act, and there is no educator to compare with the press." - Ida B. Wells-Barnett, journalist, newspaper editor, suffragist, feminist and founder with others of NAACP.

User avatar
RTH10260
Posts: 16693
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Science, General Stuff

#1127

Post by RTH10260 » Thu Nov 23, 2017 6:38 pm

on the recent visitor from outer space
Asteroid Portends Quadrillion Trillion More in Galaxy
Reports of the first-ever flyby of a body from another stellar system suggest a vast sea of interstellar shards and a Neptune-like planet around every star in the Milky Way

By Greg Laughlin on November 22, 2017

From its vantage on the 10,000-foot summit of Maui’s Haleakala, the Pan-STARRS project is tasked to find asteroids that might threaten our planet. Its cameras image a full seventh of the sky every night, sifting the firmament for hints of anything that moves or changes. On October 19, the project’s computers detected a fast-moving object on images taken the previous evening. An alert went out, and other telescopes picked up the chase. Within a few days, it was clear that an asteroid-like visitor from interstellar space had infiltrated our solar system, and we were witnessing the first-ever flyby of a body from another stellar system

A paper published November 20 in Nature by Karen Meech (University of Hawaii) and 17 collaborators reviews and adds to the growing collection of observations that have accumulated during the remarkable encounter. The object, now officially named 1I/2017 U1 (and also known by the Hawaiian “‘Oumuamua,” or messenger from the distant past) is unambiguously extrasolar in origin and exhilaratingly bizarre in nature. Coming from the direction of the solar apex (the point in the sky toward which the solar system is moving as it orbits the galaxy), it streaked toward the sun with an initial speed of 26 kilometers per second, accelerating to 88 kilometers per second at the moment of its September 9 close approach well inside of Mercury’s orbit. When finally caught by Pan-STARRS’ cameras, it had already swung past the sun and crossed Earth’s orbit in the outbound direction. The sun’s waning gravitational influence on it is now steering it toward an exit point from our solar system in the direction of the constellation Pegasus.

As reported in the Nature article, Meech and her team enlisted a fleet of the world’s largest telescopes (including Gemini South, the VLT and Keck) to monitor ‘Oumuamua’s brightness and its spectrum over the course of several nights during the last week of October. The spectral observations point to a very red color, roughly consistent with the hue of comets and other outer solar system bodies. The inference is that—like comets—‘Oumuamua’s surface is covered with carbon-rich material and is likely not very good at reflecting light. The light curves are nothing short of startling. They strongly suggest that ‘Oumuamua is a crazily elongated shard that rotates every seven hours and 20 minutes. This rate of spin would cause a weakly gravitating rubble pile to fly apart; ‘Oumuamua must be a solid monolith, held together like a rock by its physical strength. If one assumes that it reflects that same fraction of the light that hits it as that reflected by Earth’s moon, it is quite similar in both size and shape to the largest aircraft supercarriers.

https://blogs.scientificamerican.com/ob ... in-galaxy/



User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1128

Post by RVInit » Thu Nov 23, 2017 7:26 pm



"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1129

Post by RVInit » Mon Nov 27, 2017 12:28 pm



"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
RTH10260
Posts: 16693
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Science, General Stuff

#1130

Post by RTH10260 » Mon Nov 27, 2017 3:17 pm

RVInit wrote:
Mon Nov 27, 2017 12:28 pm
https:// twitter.com/NASAMoon/status/935183122651590657
NASA Moon @NASAMoon
Moon swirls! 🍥 When a meteorite hits the lunar surface, there is so much heat that rock melts, like lava. This impact melt likely flowed at varying speeds to make this swirl in Giordano Bruno Crater.
Fake News, and it was all recorded in the desert voids of Arizona !!!!!!!!!!!!!!



User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1131

Post by RVInit » Mon Nov 27, 2017 4:02 pm

RTH10260 wrote:
Mon Nov 27, 2017 3:17 pm
RVInit wrote:
Mon Nov 27, 2017 12:28 pm
https:// twitter.com/NASAMoon/status/935183122651590657
NASA Moon @NASAMoon
Moon swirls! 🍥 When a meteorite hits the lunar surface, there is so much heat that rock melts, like lava. This impact melt likely flowed at varying speeds to make this swirl in Giordano Bruno Crater.
Fake News, and it was all recorded in the desert voids of Arizona !!!!!!!!!!!!!!
Is that true? I thought I cleaned out these fakey science things from my twitter feed. I guess I need to look more carefully and do some more house cleaning! :oops:
Edit: I think you are pulling my leg. This does appear to be a legitimate story and photo from the Earth's moon. :lol: You got me good.


"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
pipistrelle
Posts: 4701
Joined: Wed Oct 19, 2016 11:26 am

Re: Science, General Stuff

#1132

Post by pipistrelle » Mon Nov 27, 2017 4:07 pm

RVInit wrote:
Mon Nov 27, 2017 4:02 pm
RTH10260 wrote:
Mon Nov 27, 2017 3:17 pm
RVInit wrote:
Mon Nov 27, 2017 12:28 pm
https:// twitter.com/NASAMoon/status/935183122651590657
Fake News, and it was all recorded in the desert voids of Arizona !!!!!!!!!!!!!!
Is that true? I thought I cleaned out these fakey science things from my twitter feed. I guess I need to look more carefully and do some more house cleaning! :oops:
The check mark may help.



User avatar
RTH10260
Posts: 16693
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Science, General Stuff

#1133

Post by RTH10260 » Mon Nov 27, 2017 4:50 pm

RVInit wrote:
Mon Nov 27, 2017 4:02 pm
:snippity:
Edit: I think you are pulling my leg. This does appear to be a legitimate story and photo from the Earth's moon. :lol: You got me good.
Sorry - the tongue-in-cheek smiley got gobbled up by the conspiracy ;)



User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1134

Post by RVInit » Wed Nov 29, 2017 11:48 am

Yeti Legends Are Based on These Real Animals, DNA Shows

Now, DNA analysis of multiple supposed Yeti samples—including hair, teeth, fur, and feces—shows that the stories are based on real animals roaming the high mountains. The results, published this week in the Proceedings of the Royal Society B, are the best evidence yet that the Yeti legend is rooted in Himalayan black and brown bears.

Study leader Charlotte Lindqvist of the University at Buffalo in New York and her team examined nine Himalayan Yeti samples from museums and private collections. One was a tooth from a stuffed specimen at the Reinhold Messner Mountain Museum in Italy. Another was a piece of skin from a supposed Yeti hand that became a religious relic in a monastery.


Their detailed DNA work shows that the tooth came from a domestic dog, while the rest of the samples clearly came from Himalayan and Tibetan subspecies of brown bear and an Asian black bear. The results offer a window into the origins of Yeti stories, which have been told for centuries.

“Analysing Yeti samples and showing that the majority are from bears provides a connection between the myths of a rare wildman and a real creature which can occasionally be scary,” says Ross Barnett, an evolutionary biologist and expert on ancient DNA at Durham University in the U.K.

The work also allowed the team to create a new family tree of vulnerable subspecies of Asian bears, which may prove useful in efforts to protect the animals.
:snippity:
For Lindqvist, collecting and studying so-called Yeti remains was “a nice segue into possibly getting samples and getting better insight into the evolutionary history of bears in the region.”

For instance, her team’s new family tree suggests that while Tibetan brown bears are closely related to brown bears from Europe and North America, critically endangered Himalayan brown bears are part of an older lineage that may have split off from all other bears 650,000 years ago during a period of ice age glaciation.
https://news.nationalgeographic.com/201 ... 74702036=1


"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
RTH10260
Posts: 16693
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Science, General Stuff

#1135

Post by RTH10260 » Wed Nov 29, 2017 3:09 pm

RVInit wrote:
Wed Nov 29, 2017 11:48 am
Yeti Legends Are Based on These Real Animals, DNA Shows
:snippity:
https://news.nationalgeographic.com/201 ... 74702036=1
Will this now lead to the discovery of the real Bigfoot / Sasquatch ? Any remains for collecting the DNA ?



User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1136

Post by RVInit » Wed Nov 29, 2017 3:18 pm

RTH10260 wrote:
Wed Nov 29, 2017 3:09 pm
RVInit wrote:
Wed Nov 29, 2017 11:48 am
Yeti Legends Are Based on These Real Animals, DNA Shows
:snippity:
https://news.nationalgeographic.com/201 ... 74702036=1
Will this now lead to the discovery of the real Bigfoot / Sasquatch ? Any remains for collecting the DNA ?
:lol: I'll keep an eye out for that story, they are bound to get real Yeti DNA soon, very soon.


"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
Slartibartfast
Posts: 6983
Joined: Mon Aug 10, 2009 2:52 pm

Re: Science, General Stuff

#1137

Post by Slartibartfast » Wed Nov 29, 2017 3:29 pm

RVInit wrote:
Wed Nov 29, 2017 3:18 pm
RTH10260 wrote:
Wed Nov 29, 2017 3:09 pm
RVInit wrote:
Wed Nov 29, 2017 11:48 am
Yeti Legends Are Based on These Real Animals, DNA Shows
:snippity:
https://news.nationalgeographic.com/201 ... 74702036=1
Will this now lead to the discovery of the real Bigfoot / Sasquatch ? Any remains for collecting the DNA ?
:lol: I'll keep an eye out for that story, they are bound to get real Yeti DNA soon, very soon.
Why bother? Just make your own Yeti genome and use CRISPR to put it into some fertilized eggs and Bob's your uncle and you have a bunch of real live Yetis*.

* What's the collective noun for Yetis anyway?


"Strategy without tactics is the slowest route to victory. Tactics without strategy is the noise before defeat."
---Sun Tzu (quoting Thomas Jefferson)
nam-myoho-renge-kyo---Thomas Jefferson (quoting Slartibartfast)

User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1138

Post by RVInit » Wed Nov 29, 2017 5:05 pm

Slartibartfast wrote:
Wed Nov 29, 2017 3:29 pm
RVInit wrote:
Wed Nov 29, 2017 3:18 pm
RTH10260 wrote:
Wed Nov 29, 2017 3:09 pm


Will this now lead to the discovery of the real Bigfoot / Sasquatch ? Any remains for collecting the DNA ?
:lol: I'll keep an eye out for that story, they are bound to get real Yeti DNA soon, very soon.
Why bother? Just make your own Yeti genome and use CRISPR to put it into some fertilized eggs and Bob's your uncle and you have a bunch of real live Yetis*.

* What's the collective noun for Yetis anyway?
I've always like the word passel. Has a nice ring to it. A passel of Yeti? Maybe?


"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1139

Post by RVInit » Wed Nov 29, 2017 5:06 pm

Looks like women have always been pretty awesome!



"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
Tiredretiredlawyer
Posts: 6723
Joined: Tue May 10, 2016 2:56 pm
Location: Animal Planet
Occupation: Permanent probationary slave to 2 dogs, 1 cat, and 1 horse

Re: Science, General Stuff

#1140

Post by Tiredretiredlawyer » Thu Nov 30, 2017 9:43 am

This makes sense. The more you work your muscles the stronger they get.


"The people must know before they can act, and there is no educator to compare with the press." - Ida B. Wells-Barnett, journalist, newspaper editor, suffragist, feminist and founder with others of NAACP.

User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1141

Post by RVInit » Fri Dec 01, 2017 11:51 am

Hummingbirds Are Where Intuition Goes to Die
When Margaret Rubega first read about how hummingbirds drink, she thought to herself: That can’t possibly be right.

Hummingbirds drink nectar using tongues that are so long that, when retracted, they coil up inside the birds’ heads, around their skulls and eyes. At its tip, the tongue divides in two and its outer edges curve inward, creating two tubes running side by side. The tubes don’t close up, so the birds can’t suck on them as if they were straws. Instead, scientists believed that the tubes are narrow enough to passively draw liquid into themselves. That process is called capillary action. It’s why water soaks into a paper towel, why tears emerge from your eyes, and ink runs into the nibs of fountain pens.

This explanation, first proposed in 1833, was treated as fact for more than a century. But it made no sense to Rubega when she heard about it as a graduate student in the 1980s. Capillary action is a slow process, she realized, but a drinking hummingbird can flick its tongue into a flower up to 18 times a second. Capillary action also is aided by gravity, so birds should find it easier to drink from downward-pointing flowers—and they don’t. And capillary action is even slower for thicker liquids, so hummingbirds should avoid supersweet nectar that’s too syrupy—and they don’t.
https://www.theatlantic.com/science/arc ... es/546992/


"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
pipistrelle
Posts: 4701
Joined: Wed Oct 19, 2016 11:26 am

Re: Science, General Stuff

#1142

Post by pipistrelle » Fri Dec 01, 2017 11:56 am

When they figure out how hummingbirds can process so much straight sugar, a diabetes cure will be in sight.



User avatar
RTH10260
Posts: 16693
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Science, General Stuff

#1143

Post by RTH10260 » Fri Dec 01, 2017 1:11 pm

RVInit wrote:
Fri Dec 01, 2017 11:51 am
Hummingbirds Are Where Intuition Goes to Die
When Margaret Rubega first read about how hummingbirds drink, she thought to herself: That can’t possibly be right.
:snippity:
https://www.theatlantic.com/science/arc ... es/546992/
Just to note that the scientific paper that TheAtlantic has based its story on was already published back in 2011. The link mentioned within the article is: http://www.pnas.org/content/108/23/9356



User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1144

Post by RVInit » Mon Dec 04, 2017 1:46 pm

Here is something I enjoy, Okeanos Explorer live cams can be pretty interesting. The deep sea cameras often encounter some pretty interesting critters.

http://oceanexplorer.noaa.gov/okeanos/m ... tream.html


"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
RVInit
Posts: 6981
Joined: Sat Mar 05, 2016 4:31 pm

Re: Science, General Stuff

#1145

Post by RVInit » Mon Dec 11, 2017 2:27 pm

Rare video of a live ghost shark showed up in my Twitter feed. I found a couple more including a nicely done video on Slate. These appear to be from about a year ago, but still interesting and a nice change from you-know-who!



http://www.slate.com/articles/video/vid ... video.html Click the link to see video, it's different from the others.



"I know that human being and fish can coexist peacefully"
--- George W Bush

ImageImage

User avatar
RTH10260
Posts: 16693
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Science, General Stuff

#1146

Post by RTH10260 » Sun Dec 24, 2017 2:10 am




User avatar
Orlylicious
Posts: 7487
Joined: Mon Apr 23, 2012 4:02 pm

Re: Science, General Stuff

#1147

Post by Orlylicious » Wed Jan 03, 2018 1:52 am

This is helpful!

A 'beer sommelier' explains how pouring a beer the wrong way can give you a stomach ache





User avatar
Tiredretiredlawyer
Posts: 6723
Joined: Tue May 10, 2016 2:56 pm
Location: Animal Planet
Occupation: Permanent probationary slave to 2 dogs, 1 cat, and 1 horse

Re: Science, General Stuff

#1148

Post by Tiredretiredlawyer » Wed Jan 03, 2018 10:50 am

Harrrumph! I don't like the foam and I don't need to eat nachos when I drink a good beer!


"The people must know before they can act, and there is no educator to compare with the press." - Ida B. Wells-Barnett, journalist, newspaper editor, suffragist, feminist and founder with others of NAACP.

User avatar
AndyinPA
Posts: 1879
Joined: Wed Apr 05, 2017 1:00 pm
Location: Pittsburgh PA

Re: Science, General Stuff

#1149

Post by AndyinPA » Wed Jan 03, 2018 11:02 am

RTH10260 wrote:
Sun Dec 24, 2017 2:10 am
Great video! Thanks for posting.

I'm a huge fan of Tyson. I follow him on FB, have heard him speak in person, and bought his new book for my son-in-law for Christmas. It's too bad we don't have people with his just plain common sense, forget brilliant mind, in government.



User avatar
RTH10260
Posts: 16693
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Science, General Stuff

#1150

Post by RTH10260 » Sat Jan 06, 2018 4:08 pm

Happy New Year...








Post Reply

Return to “Science & Technology”