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Physics and astronomy thread (1 Viewer)

General Tso said:
NCCommish said:
General Tso said:
The LHC is back online, and this time the target is wimps. http://www.wsj.com/articles/physicists-restart-souped-up-hadron-collider-1437948498
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So sad we didn't build this. Really has us taking a backseat to Europe. Such a shame shortsighted won the day.Anyway a 70% increase in energy is pretty impressive. Can't wait to see what they find this time.
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You said it. It's one of the coolest things on the planet right now. And we are sending all of our greatest minds over there. I'm not sure if it's tourist friendly, but I'd love to see it in person with my son.
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Would love to see it. So impressive in photos got to be something to see up close and personal.

 
NCCommish said:
General Tso said:
The LHC is back online, and this time the target is wimps. http://www.wsj.com/articles/physicists-restart-souped-up-hadron-collider-1437948498
Click to expand...
So sad we didn't build this. Really has us taking a backseat to Europe. Such a shame shortsighted won the day.Anyway a 70% increase in energy is pretty impressive. Can't wait to see what they find this time.
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one of my favorite West Wing episodes
Sen. Jack Enlow, D-IL: If we can only say what benefit this thing has. No one's been able to do that.

Dr. Dalton Millgate: That's because great achievement has no road map. The X-Ray is pretty good, and so is penicillin, and neither were discovered with a practical objective in mind. I mean, when the electron was discovered in 1897, it was useless. And now we have an entire world run by electronics. Haydn and Mozart never studied the classics. They couldn't. They invented them.

Sam Seaborn: Discovery.

Dr. Dalton Millgate: What?

Sam Seaborn: That's the thing that you were... Discovery is what. That's what this is used for. It's for discovery.
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joffer said:
NCCommish said:
General Tso said:
The LHC is back online, and this time the target is wimps. http://www.wsj.com/articles/physicists-restart-souped-up-hadron-collider-1437948498
Click to expand...
So sad we didn't build this. Really has us taking a backseat to Europe. Such a shame shortsighted won the day.Anyway a 70% increase in energy is pretty impressive. Can't wait to see what they find this time.
Click to expand...
one of my favorite West Wing episodes
Sen. Jack Enlow, D-IL: If we can only say what benefit this thing has. No one's been able to do that.

Dr. Dalton Millgate: That's because great achievement has no road map. The X-Ray is pretty good, and so is penicillin, and neither were discovered with a practical objective in mind. I mean, when the electron was discovered in 1897, it was useless. And now we have an entire world run by electronics. Haydn and Mozart never studied the classics. They couldn't. They invented them.

Sam Seaborn: Discovery.

Dr. Dalton Millgate: What?

Sam Seaborn: That's the thing that you were... Discovery is what. That's what this is used for. It's for discovery.
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Exactly.

 
How the Universe Works has been incredible this season, especially the one on the moon and the Edge of the Solar System.

And Mike Rowe is just so good.

 
Mars "mystery" solved?

NASA on Monday will announce "a major scientific finding" from Mars, the agency said Thursday in a vague press release.

"Mars mystery solved," the headline said.

No further details are available on the nature of the mystery. However, the lineup for the Monday press conference sports top agency authorities, including NASA director of planetary science Jim Green and lead scientist for the Mars Exploration Program Michael Meyer.

The other guests, relatively unknown researchers from American universities, led the science and tech publication Inverse to speculate.

"Our best guess: flowing water, and the potential for alien life," the publication wrote late Thursday.
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El Floppo said:
Mars "mystery" solved?

NASA on Monday will announce "a major scientific finding" from Mars, the agency said Thursday in a vague press release.

"Mars mystery solved," the headline said.

No further details are available on the nature of the mystery. However, the lineup for the Monday press conference sports top agency authorities, including NASA director of planetary science Jim Green and lead scientist for the Mars Exploration Program Michael Meyer.

The other guests, relatively unknown researchers from American universities, led the science and tech publication Inverse to speculate.

"Our best guess: flowing water, and the potential for alien life," the publication wrote late Thursday.
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Confirmed it's water on Mars: http://www.cbsnews.com/news/mars-secret-revealed-first-unambiguous-signs-of-water/

 
joffer said:
http://www.fromquarkstoquasars.com/curiosity-rover-finds-evidence-of-liquid-water-on-mars/

Where there is water, there is life. This is a statement that has been reaffirmed over and over again. Whether it is in the acidic waters surrounding volcanoes or in the dark and frozen wastes of the icy Antarctic, wherever we find liquid water, we find life. That’s what makes the most recent find by NASA’s Curiosity rover so amazing—Evidence of liquid water on Mars.

In 2002, we discovered that there was ice on the Red Planet. More recently (in fact, it was just lat week), we found that Mars has more than just a little ice. It has glaciers. Ultimately, this frozen ice contains enough water to cover the entire planet in a meter of water. But liquid water is an entirely different ball game

The major question that is now being asked is, how can a planet with an average temperature of -55°C (-67°F) have liquid water?

In work that was recently published in the journal Nature Geoscience, the scientists behind the discovery detail their ideas about the Martian water cycle. The team, led by planetary scientist Javier Martín-Torres, who hails from the Luleå University of Technology in Sweden, asserts that salt is likely responsible for the pockets of water. Much like life is able to subsist in the near-frozen water of the Antarctic because of salt, the scientists state that salt could be present at such quantities that it alters the freezing point of the water, lowering the temperature at which the water freezes so that, in order to solidify, the water has to get a lot colder than it does on Earth.

Previously, we have detected evidence of salts on Mars, and it is this previous evidence that forms the basis of the team’s conclusion.

Ultimately, it is believed that the water cycle starts when vapor from the thin Martian atmosphere cools and gets absorbed by salt on the surface of the planet. Then, during the evening, when temperatures go well below zero, the salts become so saturated by water vapor that they form “liquid brines in the uppermost 5 cm [2 inches] of the subsurface”. These small liquid pools stick around until the daytime temperatures turn the pools back into vapor. As the day progresses, and things start to cool, the liquid water again appears.

Sadly, Curiosity hasn’t been able to capture any images of liquid water on Mars because, well, the technology hasn’t been invented yet. Yes, of course we do have cameras on Mars (as our many pictures attest); however, the cameras don’t work in the subzero temperatures where the liquid water exists on the Red Planet.

So on to the main event: Do these pools contain life? Well, we don’t know for sure. However, we do know a few things that allow us to make guesstimates. First, since the temperatures are so low, we know that life as we know it cannot exist. Second, since the pools appear to dry during the day, it is unlikely that any life at all could survive. But despite the fact that it is rather unlikely, it is certainly not impossible. And, well, that’s something.
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NASA confirms signs of flowing water on Mars

 
Monty Burns said:
interesting article about potential multiverse sighting, and some of the ways they are looking for it:

https://www.newscientist.com/article/mystery-bright-spots-could-be-first-glimpse-of-another-universe/
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I read through the submitted paper a couple days ago. I was intrigued at first by the headlines (still am), but ultimately it is a HUGE, SPECULATIVE reach to suggest the observed abnormalities in CMB are from interactions with other universes. Even if true, I am not sure how such a conclusion could be verified. It should be noted that the paper has not yet been peer reviewed.

 
Galileo said:
Monty Burns said:
interesting article about potential multiverse sighting, and some of the ways they are looking for it:

https://www.newscientist.com/article/mystery-bright-spots-could-be-first-glimpse-of-another-universe/
Click to expand...
I read through the submitted paper a couple days ago. I was intrigued at first by the headlines (still am), but ultimately it is a HUGE, SPECULATIVE reach to suggest the observed abnormalities in CMB are from interactions with other universes. Even if true, I am not sure how such a conclusion could be verified. It should be noted that the paper has not yet been peer reviewed.
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I agree about the huge speculation.....what I'm intrigued about is that scientists even potentially have ways of looking for signs of the Multiverse at all....

 
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