Gravity is important.
its just ironic, a big meteor hits russia, hours before a close encounter with DA-14... It certainly seems like they can be related in some form or fashion.. I am no scientist, but my opinion is they are related... Is DA-12 going to be closer then they are guessing?
Now, researchers find that magnesium oxide, a common rocky mineral on Earth, can transform into liquid metal at the extreme pressures and temperatures found in super-Earths. This fluid metal could help generate magnetic dynamos in super-Earths, they say
Magnesium oxide is a transparent ceramic found from Earth's surface to its deepest mantle. To see how this rocky material might behave in alien planets, researchers fired powerful lasers at small pieces of magnesium oxide, in just 1 billionth of a second, heating and squeezing this mineral to conditions found inside super-Earths, such as pressures up to 14 million times normal Earth atmospheric pressure and temperatures as high as 90,000 degrees Fahrenheit (50,000 Celsius). They watched this rocky substance change to a solid with a new crystal structure, and finally into a liquid metal.
"What was most surprising was how well-behaved magnesium oxide is in the laboratory," said lead study author R. Stewart McWilliams, a geophysicist at the Carnegie Institution of Washington. "The physical properties of magnesium oxide look very similar to what has been predicted for decades by theorists. As scientists, we can't ask for much better."
"It is often said that life on planets may require the presence of a strong magnetic field to protect organisms from dangerous radiation from space such as cosmic rays — at least this may be true for certain types of life, similar to humans, that live on a planet's surface," McWilliams said. "We find that magnetic fields may occur on a wider range of planets than previously thought, possibly creating unexpected environments for life in the universe.".
Magnets stick to each other because all (or a majority, anyway) of the atoms in a metal are aligned in the same direction. (Some) metals become magnets when exposed to a magnetic field, causing them to become attracted to each other If a metal is hot enough to be in liquid form, all of the atoms are too busy jumping around to align themselves to the magnetic field. Perhaps if a liquid metal were exposed to a very powerful magnet, the atoms in the liquid would align themselves and turn the liquid into a solid. That's pure speculation, however. What I know is that magnets, if heated to a sufficient degree, lose their magnetic properties.
Originally posted by DarthFazer
Here is some more footage
Originally posted by Phage
reply to post by winofiend
Fun with simple math.
2012 DA14 has a velocity of 7.82km/s relative to Earth.
The meteor struck at what, about 15 hours before closest approach of the satellite? Ignoring the fact that the meteor came from the direction of the Sun and the asteroid is passing on the opposite side, this would mean that if the two objects were on similar orbits the meteor would have to have been more than 400,000 km in front of the asteroid.
Sort of hard to connect the two, even if they were on the same orbit. Which they weren't.
edit on 2/15/2013 by Phage because: (no reason given)
Originally posted by solargeddon
Of course this is all in your "opinion," as per the information made available to you.
Not saying your perspective is wrong, but I'm not going to dissmiss the open minded approach some of the experts are taking either.
Always be a masochist...make life more interesting!