|Simulation of what wave mixing could tell us about diamond|
|To prevent microwaves passing through it from reflecting backward, a new 'metamaterial' uses antennas of alternating orientations (top) that are connected by amplifier circuits (bottom).|
A theoretical computer built in a mixed-up mathematical universe might not sound like the most practical invention. But the discovery shows that computation can turn up in the most unlikely places, which in turn might spur more realistic models of physical and chemical processes.
|An artist's conception of the white dwarf pair shows how they would radiate spirals of gravitational waves|
[Credit: Caltech / Scott Kelberg and Michael Roukes]
Bird's eye view (Image: Design Pics Inc/Rex Features)
The bath of cells in avian eyes could prolong a delicate quantum state that helps to explain how some birds navigate using Earth's magnetic field.
|Keeping time: using an array of pulsars to look for gravitational waves|
Scientists at the Harvard-Smithsonian Center for Astrophysics (CfA) and their colleagues at the Heidelberg Institute for Theoretical Studies (HITS) have invented a new computational approach that can accurately follow the birth and evolution of thousands of galaxies over billions of years.
Supernovaes' multiple origins (Image: Romano Corradi and the Instituto de Astrofísica de Canarias)
Once upon a time, in a faraway place, a white-bearded dwarf lived next to a red-haired giant.
Every so often the giant would belch a great wind through the land, which lifted his stray hairs into the air and plastered them all over the dwarf's small hovel. Blaming the giant for poor hygiene, the dwarf vowed revenge and set about brewing the hair into a potion, hoping that downing the draught would give him the giant's great stature.
NASA's Curiosity rover had hardly touched down on the surface of Mars on Aug. 5 when its cameras started transmitting images back to Earth of some odd things -- what some were calling UFOs.
In one instance of Martian weirdness, YouTube poster StephenHannardADGUK put a curious Curiosity image through a series of filters, revealing a number of UFO-type objects, or specks or blotches, in the sky above.
Research presented Aug. 23, 2012 at the International Astronomical Union General Assembly in Beijing has found the first group of galaxies that is just like ours, a rare sight in the local Universe.
It was the ultimate phase change. Two particle smashers are homing in on what caused the seething primordial soup of the early universe to evolve into the protons and neutrons that make up ordinary matter today. In the process one has set a new record: the hottest temperature ever created by humans.