quarta-feira, 28 de maio de 2014

Your Favorite Booze Under The Microscope

How do they do it? They first crystallize the beverage on a microscope slide, and then take pictures using a polarized light microscope with a camera attached. As the light passes through the crystals, some amazing colors and patterns show up. The result is pretty mesmerizing. Check out a few of our favorites:
Read more at http://www.iflscience.com/chemistry/your-favorite-booze-under-microscope#uOFfADYgWrFYgCk7.99

How do they do it? They first crystallize the beverage on a microscope slide, and then take pictures using a polarized light microscope with a camera attached. As the light passes through the crystals, some amazing colors and patterns show up. The result is pretty mesmerizing. Read more.

Dry Martini

English Oatmeal Stout

Champagne

Watch Salt Cubes Form In The Dead Sea


 The Dead Sea is a giant, super-saline lake at the lowest spot on Earth. And its beaches appear to be pebbled with perfect little cubes of salt. Crystal solids with flat sides like salt are symmetrical in shape because their molecules are arranged in a repeating pattern of positive and negative ions; the bonds between these electrons and protons are formed from electrostatic forces. Salt crystals are always cube-shaped, though impurities can cause crystals to grow into jagged chunks. Read more.

The Revolutionary Quantum Computer That May Not Be Quantum at All


Located at NASA Ames Research Center in Mountain View, California, a couple of miles from the Googleplex, the machine is literally a black box, 10 feet high. It’s mostly a freezer, and it contains a single, remarkable computer chip—based not on the usual silicon but on tiny loops of niobium wire, cooled to a temperature 150 times colder than deep space. The name of the box, and also the company that built it, is written in big, science-fiction-y letters on one side: D-WAVE. Executives from the company that built it say that the black box is the world’s first practical quantum computer, a device that uses radical new physics to crunch numbers faster than any comparable machine on earth. If they’re right, it’s a profound breakthrough. The question is: Are they? Read more.

sexta-feira, 23 de maio de 2014

Astronomers Capture A Rare Wolf-Rayet Star Just Hours After It Dramatically Explodes

 


For the first time ever, scientists have gathered direct evidence that demonstrates a massive object with the characteristics of a Wolf-Rayet star met its demise in a ferocious Type IIb supernova explosion. Furthermore, they were able to capture the event a mere 6 hours after the explosion was initiated. The observations have been published in NatureRead more.
For the first time ever, scientists have gathered direct evidence that demonstrates a massive object with the characteristics of a Wolf-Rayet star met its demise in a ferocious Type IIb supernova explosion. Furthermore, they were able to capture the event a mere 6 hours after the explosion was initiated. The observations have been published in Nature.
Read more at http://www.iflscience.com/space/astronomers-capture-rare-wolf-rayet-star-just-hours-after-it-dramatically-explodes#T7BVtko4JpEhv7Fg.99

SATNAV Summer School


Students still have time to join the ESA International Summer School on GNSS, taking place in the Czech Republic this July. The 10-day course will cover all aspects of satellite navigation, up to and including the creation of a satnav-based business. More info.

Superhydrophobic Material Developed That Makes Water Bounce Like A Ball


 Engineers from Brigham Young University (BYU) are developing extremely waterproof surfaces that they believe could dramatically improve the efficiency of both power plants and solar energy systems. These surfaces, called superhydrophobic surfaces, are extremely difficult to wet since they cause water to aggregate and form beads that sit on the surface.
If you turn to nature you can see numerous examples of naturally occurring superhydrophobic surfaces such as duck feathers, butterfly wings and lotus leaves. These surfaces efficiently repel water, causing it to clump together and form little beads because it is more attracted to itself than the surface. These surfaces have inspired many engineers in the field of biomimetics, where scientists attempt to imitate elements of nature to solve problems. Read more.

quarta-feira, 21 de maio de 2014

Astronomers Have Identified Stars That Eat Earth-Like Planets



"Imagine that the star originally formed rocky planets like Earth. Furthermore, imagine that it also formed gas giant planets like Jupiter," says Mack. "The rocky planets form in the region close to the star where it is hot and the gas giants form in the outer part of the planetary system where it is cold. 
However, once the gas giants are fully formed, they begin to migrate inward and, as they do, their gravity begins to pull and tug on the inner rocky planets. With the right amount of pulling and tugging, a gas giant can easily force a rocky planet to plunge into the star. If enough rocky planets fall into the star, they will stamp it with a particular chemical signature that we can detect." Read more.


"Imagine that the star originally formed rocky planets like Earth. Furthermore, imagine that it also formed gas giant planets like Jupiter," says Mack. "The rocky planets form in the region close to the star where it is hot and the gas giants form in the outer part of the planetary system where it is cold. However, once the gas giants are fully formed, they begin to migrate inward and, as they do, their gravity begins to pull and tug on the inner rocky planets. With the right amount of pulling and tugging, a gas giant can easily force a rocky planet to plunge into the star. If enough rocky planets fall into the star, they will stamp it with a particular chemical signature that we can detect."
Read more at http://www.iflscience.com/space/astronomers-have-identified-stars-eat-earth-planets#874HGxJuZ1ZzfdE7.99
"Imagine that the star originally formed rocky planets like Earth. Furthermore, imagine that it also formed gas giant planets like Jupiter," says Mack. "The rocky planets form in the region close to the star where it is hot and the gas giants form in the outer part of the planetary system where it is cold. However, once the gas giants are fully formed, they begin to migrate inward and, as they do, their gravity begins to pull and tug on the inner rocky planets. With the right amount of pulling and tugging, a gas giant can easily force a rocky planet to plunge into the star. If enough rocky planets fall into the star, they will stamp it with a particular chemical signature that we can detect."
Read more at http://www.iflscience.com/space/astronomers-have-identified-stars-eat-earth-planets#874HGxJuZ1ZzfdE7.99

A Supercell Storm Cloud Forming over Wyoming


terça-feira, 20 de maio de 2014

Where Art and Science collide

In his TEDGlobal 2013 talk, Fabian Oefner shares breathtaking images at the nexus of art and science, which beautifully capture unique moments of physical and chemical drama. Read more.

Nebula No. 10 (2011)


Quantum Positioning Could Be 1000x More Accurate Than GPS


Scientists from the UK Defence Science and Technology Laboratory (DSTL) and UK National Physical Laboratory (NPL) are in the process of developing a novel navigation system for submarines, known as quantum positioning, which could be 1000 times more accurate than current systems. 
The prototype is expected to be trialled on land in 2015 and, if successful, the team hope that it could eventually be commercialized and used in the civilian world. Read more.
Scientists from the UK Defence Science and Technology Laboratory (DSTL) and UK National Physical Laboratory (NPL) are in the process of developing a novel navigation system for submarines, known as quantum positioning, which could be 1000 times more accurate than current systems. The prototype is expected to be trialed on land in 2015 and, if successful, the team hope that it could eventually be commercialized and used in the civilian world.
Read more at http://www.iflscience.com/technology/quantum-positioning-could-be-1000x-more-accurate-gps#F68FvdFYSKWifisp.99
Scientists from the UK Defence Science and Technology Laboratory (DSTL) and UK National Physical Laboratory (NPL) are in the process of developing a novel navigation system for submarines, known as quantum positioning, which could be 1000 times more accurate than current systems. The prototype is expected to be trialed on land in 2015 and, if successful, the team hope that it could eventually be commercialized and used in the civilian world.
Read more at http://www.iflscience.com/technology/quantum-positioning-could-be-1000x-more-accurate-gps#F68FvdFYSKWifisp.99

Complete 2014 Astronomy Course Online


All lectures are free and online at http://planetary.org/bettsclass and you can earn a Certificate of Achievement for watching them. You can learn more about the class on the same web page including syllabus and assignments. More info.

sexta-feira, 16 de maio de 2014

Voyager's Neptune

http://apod.nasa.gov/apod/ap140515.html

Single Choice


quarta-feira, 14 de maio de 2014

Illustris Simulation of the Universe


Scientists Induce Lucid Dreaming With Electrical Stimulation




Lucid dreaming is the somewhat misleading name given to dreams where the dreamer is aware that they are in fact dreaming. They are not necessarily any clearer than other dreams, but the dreamer can often consciously control the course of the dream, making for a more intelligible experience.
“Lucid dreaming is a very good tool to observe what happens in the brain and what is causally necessary for secondary consciousness,” says Voss. She has found that the brainwaves produced by people who subsequently report experiencing lucid dreams fall somewhere between those of REM-sleep and wakefulness. The frontal and temporal lobes of the brain, responsible for most of what we think of as higher thinking, show lower frequency gamma waves, 25-40Hz, thought to be associated with conscious attention. 
Lucid dreaming is the somewhat misleading name given to dreams where the dreamer is aware that they are in fact dreaming. They are not necessarily any clearer than other dreams, but the dreamer can often consciously control the course of the dream, making for a more intelligible experience.
Read more at http://www.iflscience.com/brain/scientists-induce-lucid-dreaming-electrical-stimulation#2IKCCtdHOYXhhiI7.99
Lucid dreaming is the somewhat misleading name given to dreams where the dreamer is aware that they are in fact dreaming. They are not necessarily any clearer than other dreams, but the dreamer can often consciously control the course of the dream, making for a more intelligible experience.
Read more at http://www.iflscience.com/brain/scientists-induce-lucid-dreaming-electrical-stimulation#2IKCCtdHOYXhhiI7.99
Lucid dreaming is the somewhat misleading name given to dreams where the dreamer is aware that they are in fact dreaming. They are not necessarily any clearer than other dreams, but the dreamer can often consciously control the course of the dream, making for a more
Read more at http://www.iflscience.com/brain/scientists-induce-lucid-dreaming-electrical-stimulation#0ujTYAcgumsVKI4D.99

terça-feira, 13 de maio de 2014

Biomarkers and ageing: The clock-watcher

Biomathematician Steve Horvath has discovered a strikingly accurate way to measure human ageing through epigenetic signatures.
Horvath's clock emerges from epigenetics, the study of chemical and structural modifications made to the genome that do not alter the DNA sequence but that are passed along as cells divide and can influence how genes are expressed. As cells age, the pattern of epigenetic alterations shifts, and some of the changes seem to mark time. To determine a person's age, Horvath explores data for hundreds of far-flung positions on DNA from a sample of cells and notes how often those positions are methylated — that is, have a methyl group attached.
He has discovered an algorithm, based on the methylation status of a set of these genomic positions, that provides a remarkably accurate age estimate — not of the cells, but of the person the cells inhabit. Read more.

segunda-feira, 12 de maio de 2014

Fire rainbows


The rainbow effect is created when tiny ice crystals in the water vapour of clouds reflect the sunlight at the exact right angle. The sight is rare and has only ever been photographed a couple of times.
   
Images: (L) Ken Rotberg (R) UC Santa Barbara Geography.

AstroDrone app


A new ESA app enables you to put your smartphone-controlled drone in the place of Europe’s Rosetta spacecraft approaching its target comet. You can try for a perfect landing on the comet while flying your drone for real.
This updated version of the AstroDrone app – first released last year – is part of a crowdsourcing project by ESA’s Advanced Concepts Team. By gathering data from the drone’s sensors and movements, they aim to teach robots how to navigate their environments. Read more.

Astronomers find the first sibling of the sun

Sen—A team of researchers has identified for the first time a star directly related to the Sun, one almost certainly born from the same cloud of gas and dust.
The find, led by astronomer Ivan Ramirez of The University of Texas, will help astronomers look for other solar siblings. It could lead to an understanding of how and where our Sun formed, and how our Solar System became hospitable for life.
“We want to know where we were born,” Ramirez said. “If we can figure out in what part of the galaxy the Sun formed, we can constrain conditions on the early solar system. That could help us understand why we are here.” Read more.

TEDx RocketMinds



At the TEDx RocketMinds event 8 May, speakers presented their visions of how our missions to Mars and beyond will create new opportunities, linking science to business and to global issues. The event was livestreamed and can all be viewed again from here.

Astronomers make the most precise measurement of a pulsar


Sen—An international team of astronomers has measured the beat of a distant pulsar one million times more precisely than has previously ever been achieved.
The team used the interstellar medium between stars and galaxies, that is made up of sparsely spread charged particles, as a giant lens to magnify and look closely at the radio wave emission from the pulsar—a small rotating neutron star. Read more.

Chemotherapy timing is key to success


MIT researchers have devised a novel cancer treatment that destroys tumor cells by first disarming their defenses, then hitting them with a lethal dose of DNA damage.
In studies with mice, the research team showed that this one-two punch, which relies on a nanoparticle that carries two drugs and releases them at different times, dramatically shrinks lung and breast tumors. The MIT team, led by Michael Yaffe, the David H. Koch Professor in Science, and Paula Hammond, the David H. Koch Professor in Engineering, describe the findings in the May 8 online edition of Science Signaling. Read more.

quarta-feira, 7 de maio de 2014

A Terra em direto e em alta definição a partir do Espaço


Já é possível ver o planeta Terra em direto e em alta definição através da Estação Espacial Internacional (EEI). No início do mês, a NASA lançou a experiência "High Definition Earth Viewing" e colocou quatro câmaras no exterior da EEI que transmitem, 24 horas por dia, imagens em stream que podem ser acompanhadas por qualquer computador conectado à internet. 
O objetivo do projeto "High Definition Earth Viewing" passa por testar o comportamento das câmaras no Espaço. A NASA pretende estudar a forma como o hardware reage ao ambiente radioativo da órbita baixa da Terra para que se possa decidir que tipo de câmaras serão utilizadas em futuras missões. As câmaras - são quatro modelos diferentes - estão alojadas em cápsulas com temperaturas controladas, nitrogénio seco e pressão semelhante à da Terra. Ler mais.

domingo, 4 de maio de 2014

Finally, Element 117 Is Here!



It's taken years, but physicists have finally filled in a persistent gap in the periodic table. Eight years after the creation of element 118, the heaviest known atom, researchers have made a few atoms of its slightly lighter neighbor, element 117, by shooting an intense beam of calcium ions into a target of berkelium. Besides sketching in the blank space in the table, the discovery bolsters the notion of an "island of stability," a group of superheavy nuclei still tantalizingly out of reach that theorists predict may be as stable as more familiar elements. Read more.