Despite extensive analysis, Fermi bubbles defy explanation
Scientists from Stanford and the Department of Energy’s SLAC National Accelerator Laboratory have analyzed more than four years of data from NASA’s Fermi Gamma-ray Space Telescope, along with data from other experiments, to create the most detailed portrait yet of two towering bubbles that stretch tens of thousands of light-years above and below our galaxy.
The bubbles, which shine most brightly in energetic gamma rays, were discovered almost four years ago by a team of Harvard astrophysicists led by Douglas Finkbeiner who combed through data from Fermi’s main instrument, the Large Area Telescope.
Math is Beautiful, math is the absolute truth and that makes it beautiful. Mathematicians even go so far as calling it an art form.
mathematics, rightly viewed, possesses not only truth, but supreme beauty — a beauty cold and austere, like that of sculpture, without appeal to any part of our weaker nature, without the gorgeous trappings of painting or music, yet sublimely pure, and capable of a stern perfection such as only the greatest art can show - Bertrand Russel
One of the most amazing equations, in my opinion, is the Lorentz factor,
Virtually all of the mathematics behind Einsteins theory or special relativity can be reduced back to this one, simple equation. basically, these few lines describe exactly what happens when you travel close to the speed of light, and the fact that it is as simple and short as it is, is beautiful.
I love this because it’s so simple. This same factor is used in the calculation of relativistic increases in mass (the faster you go the more energy starts increasing mass instead of increasing your speed, or rather momentum seeing as the mass ‘increase’ is only perceived in the direction it is traveling in), time dilation where time is slowed for the person who is traveling close to the speed of light (relative to outside observers), and appearing to contract the length of the thing moving at that speed till it’s essentially a line segment (but only as viewed by observers - you wouldn’t feel a thing if you were traveling in a space ship traveling that fast provided you are not accelerating).
So how fast would you need to travel for 1 day to last a year? (from your perspective - to the outsider only a day has passed.)
Well, you’d have to be moving at more than 86% of the speed of light to double the length of time compared to a relative observer. So to increase the length of a day to a year you’d need to be moving at 99.999625% of the speed of light. Of course the amount of energy required to do something like that is unfathomable and to accelerate to that velocity without being crushed to death would take about a year on it’s own (again from an outsiders perspective - really good discussion on this forum BTW).
Time dilation, length dilation, relativistic mass, ect. calculators here
What it’s like for an observer on a relativistic space ship here
30 July 2014
Bio-bots Are Coming
Think of a robot and you probably imagine something made of metal and wires. But scientists are now exploring the softer side of robotics, developing devices made from squishy biological materials that adapt quickly to the environment around them. These bio-bots, as they’re known, could transform the robots of the future. A team of US researchers has used 3D printing to create a tiny soft ‘skeleton’ made of a special gel. This is then impregnated with mouse muscle stem cells, which grow into a sheet of strong muscle cells (pictured) to provide power and movement. Normally, muscle cells in the body respond to electrical signals, and it’s the same here: an electrical zap gets the bio-bot crawling along like an inchworm. It’s pretty slow – just a fraction of a millimetre per second – but this technology could one day lead to revolutionary biological machines.
Written by Kat Arney
Polyscapes. I don’t quite understand this concept, I mean distinctly (though surely some readers may know more) but we must recognize that some of these images are beautiful.
DEATH GRIPS - PUNK WEIGHT
I swear to god the second the beat kicks in is the single coolest moment in my recent memory in terms of music
The Great Pyramids of Giza, as you’ve never seen them before — at the edge of a sprawling metropolis and the vast desert.