segunda-feira, 30 de abril de 2012
sábado, 28 de abril de 2012
Há anos e anos que visões e previsões se referiam à inversão dos polos e a alterações do campo magnético planetário... Nos entretantos ocorre a reversão polar no sol.
Scientists Stumped By Sun’s Asymmetrically Reversing Magnetic Field
The Sun’s magnetic field is reversing, South becoming North, as it does approximately every 11 years on a cycle, but this time, something even stranger is going on: The North is moving much faster than the South, and space scientists aren’t sure why.
“Right now, there’s an imbalance between the north and the south poles,” Jonathan Cirtain, NASA’s project scientist for a Japanese solar mission called Hinode, in a recent article on NASA’s website. “The north is already in transition, well ahead of the south pole, and we don’t understand why.”
Further, the asymmetrically reversing solar magnetic field could have an effect on Earth, resulting in increased solar flares and the accompanying bursts of radioactive particles called “coronal mass ejections,” or CMEs, that can hit Earth and cause brilliant Northern Lights displays and problematic geomagnetic solar storms, according to NASA scientists.
“This usually leads to a double peak in the sunspot number and CME rate as a function of time,” Nat Gopalswamy, a solar scientist NASA’s Goddard Space Flight Center in Greenbelt, Md., in an email to TPM.
Gopalswamy and his team studied the Sun’s shifting magnetic field from microwave signatures obtained by Japanese radio telescopes and reported their findings in a paper in the Astrophysical Journal on April 9.
Gopalswamy explained that while the Sun’s shifting magnetic poles were first discovered in 1955, the rate at which the North and South wasn’t found to be mismatched until the last few solar cycles.
To be clear, the magnetic field doesn’t just flip, but rather, the Sun essentially sheds its current magnetic field and regrows a new one every 11 years. Currently, the Northern portion of the Sun is further along on this process than its Southern counterpart.
Further, the Sun’s oddly shifting magnetic field affects the Solar System, though it isn’t yet known just how.
“Whether the north pole of the Sun has north or south polarity decides the entry point of galactic cosmic rays into the heliosphere,” Gopalswamy told TPM.
The heliosphere is an enormous magnetic bubble made up of the continual regular ejection of charged particles from the Sun. It stretches beyond Pluto.
“Right now, there’s an imbalance between the north and the south poles,” Jonathan Cirtain, NASA’s project scientist for a Japanese solar mission called Hinode, in a recent article on NASA’s website. “The north is already in transition, well ahead of the south pole, and we don’t understand why.”
Further, the asymmetrically reversing solar magnetic field could have an effect on Earth, resulting in increased solar flares and the accompanying bursts of radioactive particles called “coronal mass ejections,” or CMEs, that can hit Earth and cause brilliant Northern Lights displays and problematic geomagnetic solar storms, according to NASA scientists.
“This usually leads to a double peak in the sunspot number and CME rate as a function of time,” Nat Gopalswamy, a solar scientist NASA’s Goddard Space Flight Center in Greenbelt, Md., in an email to TPM.
Gopalswamy and his team studied the Sun’s shifting magnetic field from microwave signatures obtained by Japanese radio telescopes and reported their findings in a paper in the Astrophysical Journal on April 9.
Gopalswamy explained that while the Sun’s shifting magnetic poles were first discovered in 1955, the rate at which the North and South wasn’t found to be mismatched until the last few solar cycles.
To be clear, the magnetic field doesn’t just flip, but rather, the Sun essentially sheds its current magnetic field and regrows a new one every 11 years. Currently, the Northern portion of the Sun is further along on this process than its Southern counterpart.
Further, the Sun’s oddly shifting magnetic field affects the Solar System, though it isn’t yet known just how.
“Whether the north pole of the Sun has north or south polarity decides the entry point of galactic cosmic rays into the heliosphere,” Gopalswamy told TPM.
The heliosphere is an enormous magnetic bubble made up of the continual regular ejection of charged particles from the Sun. It stretches beyond Pluto.
quinta-feira, 26 de abril de 2012
Katy Perry - Firework
Lee Harris dizia há tempos para esperar música de Nova Energia de Katy Perry. Eu sorri e pensei para os meus botões que essa era a minha impressão. Esta música não é nova mas de facto tem algo de fresco, renovado e inspirador. Para os dias alegres e para os dias cinzentos.
Aqui a tradução:
Firework Fogo de Artifício
Do you ever feel Você já se sentiuLike a plastic bag Como um saco plástico
Drifting through the wind Flutuando pelo vento
Wanting to start again Querendo começar de novo?
Do you ever feel, Você já se sentiu,
Feel so paper thin Com um papel bem fino
Like a house of cards Como um castelo de cartas
One blow from caving in A um sopro de desmoronar?
Do you ever feel, Você já se sentiu,
Already buried deep Como se estivesse enterrado ao fundo
Six feet under screams Gritando sob seis palmos
But no one seems to hear a thing Mas ninguém parece ouvir nada?
Do you know that there's Você sabe que ainda
Still a chance for you Há uma chance para você?
Cause there's a spark in you Porque há uma faísca em você
(refrão:)
You just gotta Você só tem
Ignite the light De acendê-la
And let it shine E deixá-la brilhar
Just own the night Apenas domine a noite
Like the 4th of July Como no dia da independência
Cause baby you're a firework Porque, baby, você é um fogo de artifício
Come on show 'em what you're worth Vá em frente, mostre o que você vale
Make 'em go "Ah, ah, ah!" Faça-os fazer "Ah, ah, ah!"
As you shoot across the sky "Ah, ah!" Enquanto você é atirado pelo céu "Ah, ah!"
Baby you're a firework Baby, você é um fogo de artifício
Come on let your colors burst Vamos, deixe suas cores explodiremMake 'em go "Ah, ah, ah!" Faça-os fazer "Ah, ah, ah!"
You're gonna leave them all in "awe, awe, awe" Você vai deixá-los dizendo "uau, uau, uau"
You don't have to feel Você não tem que se sentir
Like a wasted space Como um desperdício de espaço
You're original, Você é original,
Cannot be replaced Não pode ser substituído
If you only knew Se você soubesse
What the future holds O que o futuro guarda
After a hurricane Depois de um furacão
Comes a rainbow Vem um arco-íris.
Maybe a reason why Talvez a razão pela qual
Maybe a reason why Talvez a razão pela qual
All the doors are closed Todas as portas estejam fechadas
So you could open one that leads É que você possa abrir uma que te leve
You to the perfect road Para a estrada perfeita
Like a lightning bolt, Como um relâmpago,
Your heart will glow Seu coração vai brilhar
And when it's time, you'll know E quando chegar a hora, você saberá
(refrão)
Boom, boom, boom Boom, boom, boom
Even brighter than the moon, moon, moon Mais brilhante que a lua, lua, lua
It's always been inside of you, you, you Sempre esteve dentro de você, você, você
And now it's time to let it through E agora é hora de deixá-lo sair
(refrão)
Boom, boom, boom Boom, boom, boom
Even brighter than the moon, moon, moon Mais brilhante que a lua, lua, lua
It's always been inside of you, you, you Sempre esteve dentro de você, você, você
And now it's time to let it through E agora é hora de deixá-lo sair
:)
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