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Universe of Science
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Darqcyde



Joined: 10 Jul 2006
Posts: 11845
Location: A false vacuum abiding in ignorance.

PostPosted: Thu Feb 11, 2016 11:17 am    Post subject: Universe of Science Reply with quote

Gravitational waves are real! Black holes were observed! Confirmed!

http://www.npr.org/sections/thetwo-way/2016/02/11/466286219/in-milestone-scientists-detect-waves-in-space-time-as-black-holes-collide

Quote:
The measurements are dramatic proof that gravitational waves exist. The signal in the detector matches well with what's predicted by Einstein's original theory, according to Teukolsky, who was briefed on the results. It matches predictions of the ripples produced by two large black holes, in the final moments before they merge, swirling together at an enormous speed.

This is, arguably, the most direct observation of black holes ever made. Because black holes are (as their name implies) "black", they can't be seen with ordinary telescopes. Up until now, their existence has been inferred by looking at the stars and gas swirling around them. This gravitational signal comes directly from the holes, and it is virtually incontrovertible proof that the holes are out there. "If black holes didn't really exist, you couldn't explain these waves," he says.

Other researchers believe that the gravitational waves could tell us even more about our cosmos. "It's like looking at the universe with new eyes the amount of information that's there is going to be amazing," says Mina Arvanitaki, a theorist at the Perimeter Institute of Physics in Waterloo, Ontario. Arvanitaki will use LIGO's data to probe for undiscovered fundamental particles that might only exist in the warped space around black holes.

Teukolsky says the discovery shows just how extraordinary the natural world can be. "The universe is stranger than any kind of fiction we could imagine," he says. "I mean, it's preposterous."

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stripeypants



Joined: 24 Feb 2013
Posts: 4733
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PostPosted: Thu Feb 11, 2016 8:18 pm    Post subject: Reply with quote

I feel so unbelievably excited about this!
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Sam



Joined: 09 Jul 2006
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PostPosted: Thu Feb 11, 2016 8:57 pm    Post subject: Reply with quote

so earlier this week i was in a hospital in newburyport and my girlfriend was hitting me a bunch because she said that it wasn't her hand that was hitting me and i had to go find her real hand. i would explain yeah no that's your hand it's attached to your body. she would look at her hand again and go noooo i don't want your hand. and i would say no, no, that's YOUR hand see? follow my finger look see how it's attached to your arm that's attached to your shoulder? and she'd cry because she didn't want to be attached to a hand NO MORE HANDS. so to give this some backstory she was coming out of a 45 minute drip infusion of a LOT of ketamine so she was pretty high. what did she discover while she was high? she discovered that she was going to be a crystal gem but also the beach house because she was huger than a whole room. she had been underwater in an underwater room where everything was lit by a giant piece of purple neon toast when she stood straight up in the middle of her treatment and said "sam! everything falls into holes eventually." and i said "what?" and she explained that gravity was all a wave and it would travel all around the galaxy and slowly pull everything into holes until everything was in a hole and this was how the universe works. everything falls into holes eventually, because of GRAVITY WAVES. anyway so it's been a weird week but apparently my girlfriend made some profound discoveries about the nature of the universe compliments of a serious dose of ketamine. sorry LIGO you just got scooped. it's been a weird week,
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Mr Gary



Joined: 29 Apr 2009
Posts: 6879
Location: Some pub in England ... Uh, I mean, Scotland ... Uh, I mean, Spain ... Uh I mean Scotland again ...

PostPosted: Mon Feb 15, 2016 9:17 pm    Post subject: Reply with quote

TL;DR: Sam has a girlfriend.

Science: Weird.





Sam, hope she's feeling well!!
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Sam



Joined: 09 Jul 2006
Posts: 11135

PostPosted: Tue Feb 16, 2016 9:39 am    Post subject: Reply with quote

she's already an expert in surfing gravity waves so i assume well
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Michael



Joined: 09 Jul 2006
Posts: 11036

PostPosted: Tue Feb 16, 2016 10:34 am    Post subject: Reply with quote

Yeah how many full blown neutrinos can she take? TO THE FACE?
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Michael



Joined: 09 Jul 2006
Posts: 11036

PostPosted: Tue Feb 16, 2016 10:35 am    Post subject: Reply with quote

I was full blown once.

Better days
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Mr Gary



Joined: 29 Apr 2009
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Location: Some pub in England ... Uh, I mean, Scotland ... Uh, I mean, Spain ... Uh I mean Scotland again ...

PostPosted: Wed Feb 17, 2016 1:28 pm    Post subject: Reply with quote

Gross. Totally gross. Like 12 x something. 144 Gross.
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reasonablymad



Joined: 02 Apr 2007
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PostPosted: Sat Jan 07, 2017 6:32 pm    Post subject: Reply with quote

funny how gravity only means anything when you're drunk or high. newton must have been completely out of his skull.
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WheelsOfConfusion



Joined: 09 Jul 2006
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PostPosted: Mon Feb 06, 2017 11:12 am    Post subject: Reply with quote

One of the reasons fungi like mushrooms and yeast are considered to be more closely related to animals than to plants is because they have cell walls, but unlike plant cell walls they're made out of chitin. Chitin is also the stuff of bug bones (including those big ugly sea roaches that everyone likes to eat for some reason).

It turns out that this evolutionary relationship between bugs and mold may also explain another evolutionary mystery: how unrelated plants across the globe can hit upon the exact same way to eat bugs.
Although they're all commonly called "pitcher plants," the ones from North America, Asia, and Australia are not part of the same evolutionary line. They had to invent their pitcherness independently. And it turns out that they use a remarkably similar set of genes to do it. One gene involved produces an enzyme called chitinase that breaks down chitin. It's actually older than the insect-eating plants, and was probably an adaptation used to fight off fungal infections by attacking their cell walls. With little repurposing, those anti-fungal systems can be used to digest bugs. There are also similar genes involved in shaping the leaves of various pitcher plants into the, well, pitcher (or "pitfall trap") that holds the bugs and the enzymes. Apparently, there are only a few "easy" ways to make these traps work.
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Darqcyde



Joined: 10 Jul 2006
Posts: 11845
Location: A false vacuum abiding in ignorance.

PostPosted: Mon Feb 06, 2017 12:19 pm    Post subject: Reply with quote

I wonder of results form this research could also show results in research concerning Entomopathogenic fungus
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Nargrakhan



Joined: 20 Aug 2012
Posts: 251
Location: Space

PostPosted: Wed Feb 15, 2017 10:33 am    Post subject: Reply with quote

Why do educational science books cost so damn much?

So I was reading about Plasma Cosmology, which is an alternative take that the Universe is dominated by ionized gases and plasma, not gravity and quantum mechanics. Totally disproved thanks to recent discoveries, but still... it was a really serious attempt at explaining the Universe with an alternate theory. I think it would make great for "alternate universe" sci-fi material.

https://en.wikipedia.org/wiki/Plasma_cosmology

So anyways, I go looking to buy a copy of the book written by the original theorist, Hannes Alfven. $169.00 for the ebook... $219.00 for a printed copy. Shocked

http://www.springer.com/us/book/9789027711519

Seriously. WTF. This is why people pirate shit. It's science, so this should automatically be in the public domain, right? No one has a copyright on mathematical equations and theoretical hypothesis about the observable Universe. Plus Hannes Alfven died in 1995. Not like he needs the monies. REALLY want to read it, but not gonna pay $170+ for the thing.
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WheelsOfConfusion



Joined: 09 Jul 2006
Posts: 13923
Location: Unknown Kaddath

PostPosted: Wed Feb 15, 2017 11:04 am    Post subject: Reply with quote

Textbooks are expensive because there is a very limited market.
I have no clue why that crank's ideas command such a high price, though.

(N.B. Plasma Cosmology wasn't disproved due to "recent" discoveries but rather has never offered a very credible set of exclusive predictions that weren't immediately debunkable anyway. By that I mean it wouldn't be sufficient for Plasma Cosmology to "explain" things we already knew at the time, it would have to make new predictions that bore out in experiments and observations: it never really did that, and many of the predictions you could make based on the physics of electromagnetism were already wildly out of sync with the observations we had.

It's not like conventional cosmology ever really ignored the role of electromagnetism, which was one of the charges frequently leveled by Plasma nuts.)
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Mindslicer



Joined: 04 Sep 2006
Posts: 2528
Location: North of the People's Republic of Massachusetts

PostPosted: Wed Feb 22, 2017 2:45 pm    Post subject: Reply with quote

Astronomers discover 7 Earth-sized planets orbiting nearby star

Very cool discovery! The planets are in tight orbits around a small red dwarf, all of them within an area much closer to their parent star than Mercury is to our sun.
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mouse



Joined: 10 Jul 2006
Posts: 20622
Location: under the bed

PostPosted: Wed Feb 22, 2017 4:06 pm    Post subject: Reply with quote

oh wow - and 3 of them could have liquid water. the one that they think is most likely to support life is pretty similar to earth (a bit lighter).

except a year is only 9 days. if trump were elected on that planet, we would only have to put up with him for a couple more days.


(but seriously - this is cool.)
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