|Posted by kakastrobservatory on July 22, 2011 at 6:45 AM||comments (0)|
Spitzer detects comet storm in nearby solar system [PhysOrg.com,October 20, 2011]
NASA's Spitzer Space Telescope has detected signs of icy bodies raining down in an alien solar system. The downpour resembles our own solar system several billion years ago during a period known as the "Late Heavy Bombardment," which may have brought water and other life-forming ingredients to Earth.
Tiny battery [physics.org,October 19, 2011]
The researchers, Dr. Ran Liu and Prof. Ayusman Sen from the Department of Chemistry at The Pennsylvania State University, have published their study on the nanobattery-based motor (in a recent issue of the Journal of the American Chemical Society ASAP) serve as a self-powered nanomotor that is surprisingly fast and efficient. Ultimately, the nanobattery-based motor could be used as a nanomachine and to transport cargo for biomedical applications.
Planet-Sized Object as Cool as Earth Revealed
[ScienceDaily (Oct. 19, 2011)]
The photo of a nearby star and its orbiting companion -- whose temperature is like a hot summer day -- will be presented by Penn State Associate Professor of Astronomy and Astrophysics Kevin Luhman during the Signposts of Planets conference at NASA's Goddard Space Flight Center on Oct. 20, 2011."This planet-like companion is the coldest object ever directly photographed outside our solar system," whose mass is about six to nine times the mass of Jupiter -- but in other ways it is more like a star, Essentially, with an atmospheric temperature about cool as the Earth's."
Early-warning system for sunspots [Physics world.com,Aug 19, 2011]
Sunspots can trigger major eruptive events on the solar surface, which can lead to widespread power outages on Earth as well as wreak havoc on telecommunication and navigation systems. But researchers in the US say that they have developed a technique that could detect emerging sunspots a full day or two before they appear.
Honeycomb Carbon Crystals Possibly Detected in Space [ScienceDaily (Aug. 17, 2011)]
NASA's Spitzer Space Telescope has spotted the signature of flat carbon flakes, called graphene(which was first synthesized in a lab in 2004), in space. If confirmed, this would be the first-ever cosmic detection of the material -- which is arranged like chicken wire in flat sheets that are one atom thick.
New Images Reveal Structures of the Solar Wind as It Travels Toward and Impacts Earth [ScienceDaily (Aug. 18, 2011)]
Using data collected by NASA's STEREO spacecraft, researchers at Southwest Research Institute and the National Solar Observatory have developed the first detailed images of solar wind structures as plasma and other particles from a coronal mass ejection (CME) traveled 93 million miles and impacted Earth.
Lunar Rock Analysis Reveals the Age of Moon (ScienceDaily (Aug. 18, 2011)
Analysis conducted by an international team of scientists from the Centre for Star and Planet Formation, Natural History Museum of Denmark, University of Copenhagen on a piece of lunar rock brought back to Earth by the Apollo 16 mission in 1972 has shown that the Moon may be much younger than previously believed.
Climate Change and Ozone Destruction Hastened With Nitrous Oxide Used in Agriculture [ScienceDaily (Aug. 15, 2011)]
Researchers have discovered a new binding site for nitrous oxide (N2O). Nitrous oxide reductase, an enzyme containing copper, plays a key role in the biochemical process by reducing N2O to N2. This enzyme is highly sensitive to oxygen and is often precipitated in the reaction chain, meaning large amounts of N2O are released by fertilised fields in the farming industry
NASA Mars Rover Arrives at New Site on Martian Surface ( August 12, 2011).
After a journey of almost three years, NASA's Mars Exploration Rover Opportunity has reached the Red Planet's Endeavour crater to study rocks never seen before.
On Aug. 9, the golf cart-sized rover relayed its arrival at a location named Spirit Point on the crater's rim. Opportunity drove approximately 13 miles (21 kilometers) since climbing out of the Victoria crater.
NASA's Juno Spacecraft Launches to Jupiter
[ScienceDaily (Aug. 5, 2011)]
NASA's solar-powered Juno spacecraft lifted off from Cape Canaveral Air Force Station in Florida at 9:25 a.m. PDT (12:25 p.m. EDT), Aug. 5, 2011 to begin a five-year journey to Jupiter to study Jupiter origin and evolution so as to understand the origin of our solar system and learn more about planetary systems around other stars.
Antiproton radiation belt around Earth ( August 5, 2011)
The results of the findings published in arXiv by the Italian researchers, Piergiorgio Picozza from the University of Rome, Tor Vergata, using data from the Russian made satellite Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) have proven that theories showing there ought to be a ring of antiprotons encircling the Earth due to cosmic rays colliding with nuclei in the upper atmosphere are correct.
Scientists build battery in a nanowire (July 29, 2011)
As reported in the American Chemical Society journal- Nano Letters,the Researchers at Rice University constructed a nanoscale battery/ supercapacitor devices in an array. The devices are valuable for powering nanoscale electronics and as a research tool for understanding electrochemical phenomenon at the nanoscale.
Elusive Sun waves come into focus (July 28, 2011)
The study of near real time images sent by NASA's Solar Dynamics Observatory(S.D.O.) images sent to the Earth, sheds fresh light on the Sun, explaining how vast amounts of energy are transferred from its surface to its outer atmosphere(the corona), also helped to explain the origins of the solar wind which bombards the rest of the solar system with streams of charged particles.
Hong Kong scientists 'show time travel is impossible' (26 July 2011)
The Hong Kong University of Science and Technology research team led by Du Shengwang proved that a single photon, or unit of light, "obeys Einstein's theory that nothing can travel faster than the speed of light(i.e.,the traffic law of the universe)".Their reserach proved time travel is impossible.
Unique Volcanic Complex Discovered On Moon's Far Side [ScienceDaily] (July 26, 2011)
Analysis of new images of a curious "hot spot" on the far side of the Moon reveal it to be a small volcanic province created by the upwelling of silicic magma. The unusual location of the province and the surprising composition of the lava that formed it offer tantalizing clues to the Moon's thermal history.
Physicists closing in on 'God particle' (July 25, 2011)
Rolf Heuer, director general of the European Organisation for Nuclear Research (CERN) at a webcast press conference at CERN headquarters in Geneva say that the Experiments at the world's biggest atom smasher have yielded tantalising hints that Higgs particle truly exists or not will be final by late 2012.
Objects move through water without leaving a trace (July 25, 2011)
Metamaterials researchers Yaroslav Urzhumov and David Smith, working at Duke University have built a simulation of an object that can move through water without leaving a trace and claim it's a concept that could be built and used in the real world provided more research is done.
In their paper, published on arXiv, the researchers describe how they programmed the use of metamaterials applied to an object, along with tiny water pumps, into a model to simulate an actual object moving through water without dragging some of the water with it that would normally cause turbulence.
Astronomers Find Largest, Oldest Mass of Water in Universe (22 July 2011)
Astronomershave discovered the largest and oldest mass of water ever detected in theuniverse — a gigantic, 12-billion-year-old cloud harboring 140 trillion timesmore water than all of Earth's oceans combined. The cloud of water vaporsurrounds a supermassive black hole called a quasar located 12 billionlight-years from Earth. Researchers say that the discovery shows thatwater has been prevalent in the universe for nearly its entire existence.
AlbertoBolatto, of the University of Maryland say "Because the light we are seeing left this quasar more than 12 billion years ago, we are seeingwater that was present only some 1.6 billion years after the beginning of theuniverse,". This discovery pushes the detection of water one billion yearscloser to the Big Bang than any previous find.
Carbon nanotubes could store solar energy (July 21, 2011)
Researchers at the Massachusetts Institute of technology (MIT) have designed a new solar thermal fuel that could store up to 10,000 times more energy than previous systems, which has been studied using computational chemistry( but not yet fully tested in the lab). The new solar thermal fuel consists of carbon nanotubes (CNTs) modified with azobenzene, is expected to provide the same energy storage per volume(as lithium-ion batteries) for almost indefinitely. It can also be recharged by simply exposing it to sunlight. No electricity required.
For more details: http://physicsworld.com/cws/article/news/46620
Fermilab experiment discovers a heavy relative of the neutron (July 20, 2011)
Fermilab physicist Pat Lukens, a member of the CDF collaboration announced at Fermilab on Wednesday, July 20,2011 about the discovery of a new particle, the neutral Xi-sub-b (Ξb0). This particle contains three quarks: a strange quark, an up quark and a bottom quark (s-u-b). While its existence was predicted by the Standard Model, the observation of the neutral Xi-sub-b is significant because it strengthens our understanding of how quarks form matter.
For more details: http://www.physorg.com/news/2011-07-fermilab-heavy-relative-neutron.html
Pluto Has Another Moon (20 July 2011)
Photos from the Hubble Space Telescope revealed a tiny new moon around Pluto, the fourth and smallest one yet found orbiting the dwarf planet. The moon, which has been temporarily named P4, was spotted in a Hubble survey searching for rings around Pluto.
Artificial leaves make fuel from sunlight (July 20, 2011)
Following the announcement of artificial-leaf prototypes by the chemist Daniel Nocera of Massachusetts Institute of Technology (MIT) at the annual meeting of the American Chemical Society in California,two US research teams have taken important steps towards the creation of commercially viable "artificial leaf" – a hypothetical device that can turn sunlight into electrical energy or fuel by mimicking some aspects of photosynthesis.
For more details: http://physicsworld.com/cws/article/news/46606
Scientists discover new water waves (July 19, 2011)
Researchers Jean Rajchenbach, Alphonse Leroux, and Didier Clamond of the University of Nice-Sophia Antipolis in Nice, France, have reported the observation of two new types of standing waves in water, one of which has never been observed before in any media.
Light propagates as if 'space is missing(July 18, 2011)
UK and the US researchers have crafted an optical nanostructure that allows light to pass through without accumulating a phase change – as if the medium were completely missing in space. The device could find applications in optoelectronics, for instance as a way of transporting signals without allowing information to become distorted.
For more details: http://physicsworld.com/cws/article/news/46575
Discovering A New Earth 430 Light Years Away [Science Daily( April 1, 200)]
Astronomers Spy Earth-like Planet Forming Around Distant Star. Astrophysicists analyzing infrared images captured by the Spitzer Space Telescope found indications of a dust cloud surrounding a relatively young star. The star is 10 to 16 million years old, and analysis of the dust cloud suggests that it may coalesce and become a rocky planet like earth. It is located at a distance from the star that it may build an atmosphere, collect liquid water, and perhaps, in millions and millions of years, support life.